United States Attorney, Eastern District of California
Mr. Grant was appointed by Attorney General Pam Bondi to serve as the United States Attorney for the Eastern District of California beginning on August 11, 2025. Pursuant to 28 U.S.C. § 546(d), he was further appointed by the district court effective December 9, 2025.
Mr. Grant is a veteran of the Department of Justice, having served twice in Washington, D.C.: from 1991 to 1993 as an Attorney-Adviser in the Office of Legal Counsel, and from 2017 to 2021 as a Deputy Assistant Attorney General in the Environment and Natural Resources Division (ENRD). During his tenure at ENRD, he supervised more than a hundred Department litigators advancing the interests of the United States and its agencies in both enforcement and defensive matters, both civil and criminal.
In addition to his service in the Department, Mr. Grant has decades of experience in private practice in Washington, D.C. and Sacramento. That experience includes arguments in the U.S. Supreme Court, the California Supreme Court, and numerous other federal and state courts.
Mr. Grant served as a law clerk to Chief Justice Warren E. Burger (retired) and Associate Justice Clarence Thomas during the Supreme Court’s October 1994 Term. Earlier he served as a law clerk to Judge Edith H. Jones of the U.S. Court of Appeals for the Fifth Circuit in Houston, Texas.
Mr. Grant grew up in Modesto, California and raised his family in Sacramento County. He attended the University of California, Berkeley, from which he earned a bachelor’s degree in economics (1986) and a law degree (1990).
Special Counsel for Native American Affairs to Gov. Stitt
Ryan Leonard has extensive experience litigating cases in federal and state courts, and specializes in solving complex business problems for his clients. Ryan practices primarily in the areas of business law and litigation, insurance law, receivership law and receiverships, oil and gas litigation, and Native American and Tribal law. He maintains the highest Martindale-Hubbell Preeminent Attorney Recognition (“AV”) rating for skill and ethics for attorneys based on professional peer reviews, and has been selected annually since 2016 as a top-rated “Super Lawyer” for business litigation.
Prior to entering private practice, Ryan served as a state prosecutor in the District Attorney’s office in Canadian County, Oklahoma. Ryan also served for four years (1994-98) as a Legislative Assistant to former U.S. Senator Don Nickles in Washington, D.C., in which capacity he served as the Senator’s chief legislative aide on issues involving the federal judiciary, Indian Affairs, transportation, agriculture and natural resources.
Ryan is very active in the local community, currently serving as Chairman of the Board of Directors of Mercy Hospital- Oklahoma City. Ryan co-founded and is a past president of the Downtown Club of Oklahoma City, and previously served on the Board of Trustees of the Oklahoma City National Memorial, the Board of Directors of the Central Oklahoma Red Cross, the Central Oklahoma YMCA and KIPP Charter School, the Executive Committee of the Board of Directors for the Oklahoma Academy of State Goals, the Legal Ethics Committee of the Oklahoma Bar Association and was a member of Leadership Oklahoma Class XIX. Ryan has also volunteered his time pro bono for Oklahoma Lawyers for Children, serving children at risk in the foster care system. At a younger age, Ryan earned the rank of Eagle Scout.
In 2008, Ryan was appointed by the Governor as a Commissioner representing the State of Oklahoma on the national Uniform Law Commission, and was reappointed in 2014 and 2018. In 2015, Ryan was appointed by the President of the national organization to the Executive Committee, and as chair of the national Legislative Council. Ryan has served on numerous committees within the organization, including drafting committees implementing the Hague Convention on Choice of Court Agreements (facilitating international contracts) and drafting a Model Tribal Probate Code. Ryan co-chairs the Committee on Attendance, and serves on the Committees on Scope and Program and State and Federal Relations.
Through his law practice, Ryan is also regularly appointed by multiple Courts as a “Receiver” over troubled businesses, tasked with either managing, rehabilitating, or liquidating the business for the benefit of creditors. In 2018, at the request of the Oklahoma Insurance Commissioner, the Oklahoma County District Court appointed Ryan as “Interim CEO” of Union Mutual Insurance Company, an Oklahoma-domiciled insurance company, that was successfully rehabilitated and emerged from receivership. Ryan served as Interim CEO for a period of six months during which time he identified and installed a permanent corporate leadership team. In addition, in 2019, Ryan was appointed by the U.S. District Court for the Western District of Oklahoma to serve as Chairperson of a three-member Commission to assist the Federal Court in determining just compensation to multiple landowners in a federal eminent domain pipeline action.
In 2020, Ryan was hired by Oklahoma Governor Kevin Stitt to serve as his Special Counsel for Native American Affairs. In this capacity, Ryan assists the Governor and his administration on issues arising from the U.S. Supreme Court’s recent decision in McGirt v. Oklahoma, through which the Court ruled the Creek Nation reservation still exists within the State of Oklahoma for purposes of criminal jurisdiction.
In January 2021, as authorized by Oklahoma law, Governor Stitt designated Ryan as the lead negotiator for the state in the discussions with Oklahoma's Native American tribes to address the foundational jurisdictional issues raised by the McGirt decision.
Ryan earned his law degree from the University of Oklahoma, and graduated magna cum laude from Boston College. Ryan also attended the L’Institut d’Etudes Politiques in Strasbourg, France. In his spare time, he enjoys coaching his children's activities, reading history, travel and archaeology. He is the co-author of “Opala: In Faithful Service to the Law,” a biography on former Oklahoma Supreme Court Justice Marian Opala, as well as "Principles and Perseverance: The Life of Don Nickles."
Ryan is admitted to practice before the Oklahoma Supreme Court and all Oklahoma state courts, the federal courts of the Western and Northern Districts of Oklahoma, the 10th Circuit Court of Appeals and the United States Tax Court.
Shareholder, Greenberg Traurig
Jennifer Weddle is the Co-Chair of Greenberg Traurig's American Indian Law Practice and has wide-ranging experience in complex regulatory and jurisdictional issues, with a focus in Indian law, handling a variety of matters for tribal and non-tribal clients. She has a dynamic, inter-disciplinary practice that centers on providing strategies for resolving complex jurisdictional problems. Much of her practice focuses in the areas of tribal economic development and natural resources development. Jennifer also has U.S. Supreme Court experience, including serving as one of the attorneys for the respondent in Nevada v. Hicks (2001) and representing the petitioners in Ute Mountain Ute Tribe v. Padilla (2012) and Grand Canyon Skywalk Development, LLC v. Grand Canyon Resort Corporation (2013) and cert stage amici in Saginaw-Chippewa Tribe v. NLRB (2016) and United States v. Cooley (2020) and amici on the merits in Lewis v. Clarke (2017), U.S. v. Washington (2018), Carpenter v. Murphy (2018), McGirt v. Oklahoma (2020), and United States v. Cooley (2021).
Jennifer's work also includes negotiations for mineral leasing employment matters and representation before federal agencies. She has also been involved in civil litigation, working on numerous complex federal, state and tribal litigation matters, including class action tort litigation and large commercial disputes. Her transactional experience includes oil and gas renewables projects throughout the west, as well as Endangered Species Act work. Jennifer frequently assists tribes, banks and non-bank entities with financing and regulatory matters with Indian law components. Jennifer has wide-ranging project siting experience, including the application of NEPA, NHPA, and other environmental laws on tribal and public lands, including with respect to large linear multi-state energy and infrastructure projects. Jennifer has deep transactional, regulatory and litigation experience involving very complex matters with both legal and policy components.
Jennifer is past President of the National Native American Bar Association and past two-term Chair of the Federal Bar Association Indian Law Section. She currently serves as the Tenth Circuit Representative on the American Bar Association Standing Committee on the Federal Judiciary, a role she has held since 2018, spanning the evaluations for more than two dozen federal judicial nominees at every level of the federal courts. She is a ’00 graduate of Harvard Law School and a ’97 graduate of the University of Michigan (Classical Languages and Literature).
United States Attorney, Eastern District of California
Mr. Grant was appointed by Attorney General Pam Bondi to serve as the United States Attorney for the Eastern District of California beginning on August 11, 2025. Pursuant to 28 U.S.C. § 546(d), he was further appointed by the district court effective December 9, 2025.
Mr. Grant is a veteran of the Department of Justice, having served twice in Washington, D.C.: from 1991 to 1993 as an Attorney-Adviser in the Office of Legal Counsel, and from 2017 to 2021 as a Deputy Assistant Attorney General in the Environment and Natural Resources Division (ENRD). During his tenure at ENRD, he supervised more than a hundred Department litigators advancing the interests of the United States and its agencies in both enforcement and defensive matters, both civil and criminal.
In addition to his service in the Department, Mr. Grant has decades of experience in private practice in Washington, D.C. and Sacramento. That experience includes arguments in the U.S. Supreme Court, the California Supreme Court, and numerous other federal and state courts.
Mr. Grant served as a law clerk to Chief Justice Warren E. Burger (retired) and Associate Justice Clarence Thomas during the Supreme Court’s October 1994 Term. Earlier he served as a law clerk to Judge Edith H. Jones of the U.S. Court of Appeals for the Fifth Circuit in Houston, Texas.
Mr. Grant grew up in Modesto, California and raised his family in Sacramento County. He attended the University of California, Berkeley, from which he earned a bachelor’s degree in economics (1986) and a law degree (1990).
Special Counsel for Native American Affairs to Gov. Stitt
Ryan Leonard has extensive experience litigating cases in federal and state courts, and specializes in solving complex business problems for his clients. Ryan practices primarily in the areas of business law and litigation, insurance law, receivership law and receiverships, oil and gas litigation, and Native American and Tribal law. He maintains the highest Martindale-Hubbell Preeminent Attorney Recognition (“AV”) rating for skill and ethics for attorneys based on professional peer reviews, and has been selected annually since 2016 as a top-rated “Super Lawyer” for business litigation.
Prior to entering private practice, Ryan served as a state prosecutor in the District Attorney’s office in Canadian County, Oklahoma. Ryan also served for four years (1994-98) as a Legislative Assistant to former U.S. Senator Don Nickles in Washington, D.C., in which capacity he served as the Senator’s chief legislative aide on issues involving the federal judiciary, Indian Affairs, transportation, agriculture and natural resources.
Ryan is very active in the local community, currently serving as Chairman of the Board of Directors of Mercy Hospital- Oklahoma City. Ryan co-founded and is a past president of the Downtown Club of Oklahoma City, and previously served on the Board of Trustees of the Oklahoma City National Memorial, the Board of Directors of the Central Oklahoma Red Cross, the Central Oklahoma YMCA and KIPP Charter School, the Executive Committee of the Board of Directors for the Oklahoma Academy of State Goals, the Legal Ethics Committee of the Oklahoma Bar Association and was a member of Leadership Oklahoma Class XIX. Ryan has also volunteered his time pro bono for Oklahoma Lawyers for Children, serving children at risk in the foster care system. At a younger age, Ryan earned the rank of Eagle Scout.
In 2008, Ryan was appointed by the Governor as a Commissioner representing the State of Oklahoma on the national Uniform Law Commission, and was reappointed in 2014 and 2018. In 2015, Ryan was appointed by the President of the national organization to the Executive Committee, and as chair of the national Legislative Council. Ryan has served on numerous committees within the organization, including drafting committees implementing the Hague Convention on Choice of Court Agreements (facilitating international contracts) and drafting a Model Tribal Probate Code. Ryan co-chairs the Committee on Attendance, and serves on the Committees on Scope and Program and State and Federal Relations.
Through his law practice, Ryan is also regularly appointed by multiple Courts as a “Receiver” over troubled businesses, tasked with either managing, rehabilitating, or liquidating the business for the benefit of creditors. In 2018, at the request of the Oklahoma Insurance Commissioner, the Oklahoma County District Court appointed Ryan as “Interim CEO” of Union Mutual Insurance Company, an Oklahoma-domiciled insurance company, that was successfully rehabilitated and emerged from receivership. Ryan served as Interim CEO for a period of six months during which time he identified and installed a permanent corporate leadership team. In addition, in 2019, Ryan was appointed by the U.S. District Court for the Western District of Oklahoma to serve as Chairperson of a three-member Commission to assist the Federal Court in determining just compensation to multiple landowners in a federal eminent domain pipeline action.
In 2020, Ryan was hired by Oklahoma Governor Kevin Stitt to serve as his Special Counsel for Native American Affairs. In this capacity, Ryan assists the Governor and his administration on issues arising from the U.S. Supreme Court’s recent decision in McGirt v. Oklahoma, through which the Court ruled the Creek Nation reservation still exists within the State of Oklahoma for purposes of criminal jurisdiction.
In January 2021, as authorized by Oklahoma law, Governor Stitt designated Ryan as the lead negotiator for the state in the discussions with Oklahoma's Native American tribes to address the foundational jurisdictional issues raised by the McGirt decision.
Ryan earned his law degree from the University of Oklahoma, and graduated magna cum laude from Boston College. Ryan also attended the L’Institut d’Etudes Politiques in Strasbourg, France. In his spare time, he enjoys coaching his children's activities, reading history, travel and archaeology. He is the co-author of “Opala: In Faithful Service to the Law,” a biography on former Oklahoma Supreme Court Justice Marian Opala, as well as "Principles and Perseverance: The Life of Don Nickles."
Ryan is admitted to practice before the Oklahoma Supreme Court and all Oklahoma state courts, the federal courts of the Western and Northern Districts of Oklahoma, the 10th Circuit Court of Appeals and the United States Tax Court.
Shareholder, Greenberg Traurig
Jennifer Weddle is the Co-Chair of Greenberg Traurig's American Indian Law Practice and has wide-ranging experience in complex regulatory and jurisdictional issues, with a focus in Indian law, handling a variety of matters for tribal and non-tribal clients. She has a dynamic, inter-disciplinary practice that centers on providing strategies for resolving complex jurisdictional problems. Much of her practice focuses in the areas of tribal economic development and natural resources development. Jennifer also has U.S. Supreme Court experience, including serving as one of the attorneys for the respondent in Nevada v. Hicks (2001) and representing the petitioners in Ute Mountain Ute Tribe v. Padilla (2012) and Grand Canyon Skywalk Development, LLC v. Grand Canyon Resort Corporation (2013) and cert stage amici in Saginaw-Chippewa Tribe v. NLRB (2016) and United States v. Cooley (2020) and amici on the merits in Lewis v. Clarke (2017), U.S. v. Washington (2018), Carpenter v. Murphy (2018), McGirt v. Oklahoma (2020), and United States v. Cooley (2021).
Jennifer's work also includes negotiations for mineral leasing employment matters and representation before federal agencies. She has also been involved in civil litigation, working on numerous complex federal, state and tribal litigation matters, including class action tort litigation and large commercial disputes. Her transactional experience includes oil and gas renewables projects throughout the west, as well as Endangered Species Act work. Jennifer frequently assists tribes, banks and non-bank entities with financing and regulatory matters with Indian law components. Jennifer has wide-ranging project siting experience, including the application of NEPA, NHPA, and other environmental laws on tribal and public lands, including with respect to large linear multi-state energy and infrastructure projects. Jennifer has deep transactional, regulatory and litigation experience involving very complex matters with both legal and policy components.
Jennifer is past President of the National Native American Bar Association and past two-term Chair of the Federal Bar Association Indian Law Section. She currently serves as the Tenth Circuit Representative on the American Bar Association Standing Committee on the Federal Judiciary, a role she has held since 2018, spanning the evaluations for more than two dozen federal judicial nominees at every level of the federal courts. She is a ’00 graduate of Harvard Law School and a ’97 graduate of the University of Michigan (Classical Languages and Literature).
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
Partner, Squire Patton Boggs (Denver)
Keith Bradley represents companies before US federal and state agencies across a spectrum of regulatory regimes. As a senior advisor to the General Counsel of the US Department of Energy (DOE) until recently, he organized the defense of high-stakes litigation; advised on prominent departmental regulatory reforms, such as those in energy conservation and nuclear export controls; and was the department’s lead lawyer on implementation of the Iran nuclear deal.
Before joining DOE, he was counsel in the Legal Division of the Consumer Financial Protection Bureau, where he helped draft significant regulations, counseled senior agency executives on administrative and constitutional law, and worked with enforcement teams on some of the bureau’s most significant matters. Since leaving DOE, he has served as senior counsel for a corporation in Denver, where he built and ran the compliance management system and helped introduce regulators to the company’s novel business model.
Before his government service, Bradley engaged in administrative and regulatory litigation, appellate litigation and complex commercial litigation at a major US-based law firm.
Bradley is also a physicist who developed nanoelectronic sensor systems at a technology startup. He has 13 issued patents to his name.
Partner, Perkins Coie LLP
Thomas (Tom) Jensen provides strategic regulatory counsel, litigation support and legislative advocacy to clients in the environment, energy and natural resources sectors. With considerable experience in and deep knowledge of environmental and resources law, Tom delivers sophisticated counsel to clients involved with energy and water pipelines, electric transmission projects, transportation facilities, hydropower and other energy generation assets, and other capital-intensive infrastructure projects. Tom currently serves as lead outside regulatory and litigation counsel to a major interstate natural gas pipeline project and recently led the successful permitting and siting effort for a 500 kV interstate electric transmission project.
A nationally recognized practitioner of natural resources and environmental law, Tom advises clients throughout the business, government and nonprofit sectors, reflecting his credentials not only in the legal industry, but also in the public sector. He served as the majority counsel to the U.S. Senate Committee on Energy and Natural Resources and was the associate director for natural resources on the White House Council on Environmental Quality. He has also written numerous pieces of legislation that have been enacted into federal law and has published and lectured widely in the field.
Developers of innovative, challenging energy projects and new environmental initiatives seek out Tom’s guidance for his insight into protected natural and cultural resources, public lands and marine areas, takings law and the National Environmental Policy Act. A key player in helping clients develop and defend their project strategies, Tom leads teams involved in siting, property and right-of-way acquisition, federal, state, tribal and local permitting, settlement negotiations and litigation.
Tom speaks frequently on environmental issues, from protected species mitigation to siting strategy, water development, water quality, climate adaptation and marine energy development. He also writes and speaks on conservation of at-risk wildlife and western range lands.
Partner, Marzulla Law
Roger J. Marzulla is one of the nation’s leading environmental, water, and property lawyers. As Assistant Attorney General in charge of the U.S. Justice Department’s Environment and Natural Resources Division, Roger learned first hand the operations and litigation styles of his client agencies: EPA, Interior Department, Bureau of Reclamation, Fish and Wildlife Service, National Marine Fisheries Service, Department of Transportation, Department of Commerce. In 1997, he co-founded Marzulla Law, where he brings to bear more than 35 years of expertise representing companies and individuals in industries as diverse as land and project development, aerospace, chemicals, oil and gas, mining, timber, manufacturing, computers, agriculture and water service.
Roger began his legal career as a trial lawyer in San Jose, California, after graduating magna cum laude from the University of Santa Clara School of Law. As a partner in Matthews & Marzulla he represented developers, title and construction companies, shopping centers, apartment owners and lenders in litigation throughout California. In 1981 he moved to Denver to become President of Mountain States Legal Foundation, litigating environmental and natural resource cases across the West.
In 1983 Roger joined the Justice Department as Special Litigation Counsel. He was subsequently promoted to Deputy Assistant Attorney General and, in 1987, was confirmed by the Senate as Assistant Attorney General in charge of the Environment and Natural Resources Division. At the Justice Department, Roger helped create litigation strategies for government programs as diverse as Superfund, the Clean Air Act, off-shore oil leasing, environmental crimes, federal facility clean-up, wetlands, endangered species and hazardous waste enforcement, as well as Presidential Order EO 12,630 (Government Interference with Private Property Rights).
In 1989 Roger returned to private law practice, successively heading the environmental law practices of the Powell, Goldstein and Akin, Gump law firms.
Since 1997, as a partner in Marzulla Law, Roger has continued to represent corporate and business clients in a wide array of environmental and property issues in courts across the country, frequently in litigation against the United States. He also assists clients in attaining compliance with environmental, health and safety regulation, and in avoiding risks in transactions.
Tazewell Taylor Professor of Law and William H. Cabell Research Professor, William & Mary Law School
Jonathan H. Adler joined the William & Mary law faculty as the Tazwell Taylor Professor of Law and William H. Cabell Research Professor in 2025. Prior to joining the faculty, he was the inaugural Johan Verheij Memorial Professor of Law and the founding Director of the Coleman P. Burke Center for Environmental Law at the Case Western Reserve University School of Law.
Professor Adler is the author or editor of seven books, including Climate Liberalism: Perspectives on Liberty, Property and Pollution (Palgrave, 2023), Marijuana Federalism: Uncle Sam and Mary Jane (Brookings Institution Press, 2020), Business and the Roberts Court (Oxford University Press, 2016) and Rebuilding the Ark: New Perspectives on Endangered Species Act Reform (AEI Press, 2011).
His articles have appeared in publications ranging from the Harvard Environmental Law Review and Yale Journal on Regulation to the Wall Street Journal, New York Times, and Washington Post. He has testified before Congress a dozen times, and his work has been cited in the U.S. Supreme Court. A 2024 study identified Professor Adler as the seventh most cited legal academic in administrative and environmental law from 2019 to 2023.
Professor Adler is a contributing editor to Civitas Outlook and a regular contributor to the popular legal blog, The Volokh Conspiracy. A regular commentator on constitutional and regulatory issues, he has appeared on numerous radio and television programs, ranging from the PBS Newshour and National Public Radio to the Fox News Channel and Entertainment Tonight.
Professor Adler is a senior fellow at the Property & Environment Research Center in Bozeman, Montana. In 2018, Professor Adler was elected to membership in the American Law Institute and helped co-found the organization Checks and Balances. In 2024, Professor Adler was appointed a public member of the Administrative Conference of the United States.
Professor Adler clerked for the Honorable David B. Sentelle on the U.S. Court of Appeals for the District of Columbia Circuit.
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
Director, Federal Water Policy, Water Division, Nature Program, Natural Resources Defense Council, Inc.
Jon Devine leads NRDC’s clean water solutions team. His work focuses on implementing, defending, and strengthening the core programs under the Clean Water Act. Devine’s areas of expertise include curbing runoff pollution through the development of green infrastructure, increasing the water quality of the Mississippi River Basin by decreasing pollution, and restoring safeguards for streams, wetlands, and other bodies of water. Prior to joining the Water program, he worked with NRDC’s Health & Environment program for four years. Previously, he served as an attorney-adviser in the U.S. Environmental Protection Agency’s Office of General Counsel and also worked as an environmental specialist in Maine’s Department of Environmental Protection. Devine graduated from Bowdoin College and received his JD from Georgetown University. He is based in Washington, D.C.
Partner, Briscoe Prows Kao Ivester & Bazel LLP
Tony Francois is experienced in Water and Real Property Law, Land Use and Zoning, Environmental Regulation, Natural Resources Development, Agricultural Law, and Constitutional Law. He has represented homeowners, builders, farmers and ranchers, trade associations, and water districts in administrative, civil, and criminal proceedings before state and federal administrative agencies and state and federal trial and appellate courts. He is a member of the California State Bar and the Northern, Eastern, and Central Districts of California and the Districts of New Mexico and North Dakota, and has litigated cases in federal courts in California, Oregon, Washington, Idaho, Montana, Nevada, Arizona, New Mexico, Colorado, North and South Dakota, Minnesota, Massachusetts, Maryland, South Carolina, and the District of Columbia, as well as the Sixth, Eighth, Ninth, and Tenth Circuit Courts of Appeals. He has appeared before the Supreme Courts of California, Idaho, Nevada, and the United States.
Prior to attending law school, he served as an infantry officer in the United States Army, and was stationed in the former West Germany during the fall of the Berlin Wall.
Tony was an Attorney at Pacific Legal Foundation from 2012 to 2021. He was a lobbyist for 10 years, first with California Farm Bureau Federation from 2003 to 2007, and then with KP Public Affairs from 2007 to 2012. He was an attorney at McQuaid, Bedford & Van Zandt in San Francisco from 1999 – 2003.
Andrew Varcoe was formerly a partner at Boyden Gray & Associates in Washington, D.C. From 2014 to 2017, Mr. Varcoe was Deputy General Counsel at the Biotechnology Innovation Organization (BIO), the trade association for the biotechnology industry. He previously served as an attorney in the Office of the General Counsel of the U.S. Department of Agriculture (USDA) in Washington, D.C., and Harrisburg, Pennsylvania. While at USDA, he briefed, argued, and mediated cases in the federal courts of appeals and helped manage USDA’s and its agencies’ nationwide appellate litigation docket, working closely with trial and appellate lawyers at the U.S. Department of Justice. Before joining USDA, Mr. Varcoe was an associate and then counsel at Wilmer Cutler Pickering Hale and Dorr LLP (previously Wilmer, Cutler & Pickering). Mr. Varcoe served as a law clerk to Justice Francis X. Spina of the Massachusetts Supreme Judicial Court (from 1999 to 2000), and to Judge Edith H. Jones of the U.S. Court of Appeals for the Fifth Circuit (from 2001 to 2002).
Mr. Varcoe received his J.D. cum laude in 1999 from Harvard Law School, where he was a research assistant to Professor Martha Minow and an editor of the Harvard Journal of Law & Public Policy. Mr. Varcoe graduated with honors in 1995 from the University of Chicago, where he was Student Ombudsperson (a mediator, reporting to the President of the University, who investigated and resolved student grievances) and a member of Phi Beta Kappa.
In 2018 and 2019, Mr. Varcoe served as Chairman of the Executive Committee of the Federalist Society’s Environmental Law and Property Rights Practice Group.
United States Attorney, Eastern District of California
Mr. Grant was appointed by Attorney General Pam Bondi to serve as the United States Attorney for the Eastern District of California beginning on August 11, 2025. Pursuant to 28 U.S.C. § 546(d), he was further appointed by the district court effective December 9, 2025.
Mr. Grant is a veteran of the Department of Justice, having served twice in Washington, D.C.: from 1991 to 1993 as an Attorney-Adviser in the Office of Legal Counsel, and from 2017 to 2021 as a Deputy Assistant Attorney General in the Environment and Natural Resources Division (ENRD). During his tenure at ENRD, he supervised more than a hundred Department litigators advancing the interests of the United States and its agencies in both enforcement and defensive matters, both civil and criminal.
In addition to his service in the Department, Mr. Grant has decades of experience in private practice in Washington, D.C. and Sacramento. That experience includes arguments in the U.S. Supreme Court, the California Supreme Court, and numerous other federal and state courts.
Mr. Grant served as a law clerk to Chief Justice Warren E. Burger (retired) and Associate Justice Clarence Thomas during the Supreme Court’s October 1994 Term. Earlier he served as a law clerk to Judge Edith H. Jones of the U.S. Court of Appeals for the Fifth Circuit in Houston, Texas.
Mr. Grant grew up in Modesto, California and raised his family in Sacramento County. He attended the University of California, Berkeley, from which he earned a bachelor’s degree in economics (1986) and a law degree (1990).
Special Counsel for Native American Affairs to Gov. Stitt
Ryan Leonard has extensive experience litigating cases in federal and state courts, and specializes in solving complex business problems for his clients. Ryan practices primarily in the areas of business law and litigation, insurance law, receivership law and receiverships, oil and gas litigation, and Native American and Tribal law. He maintains the highest Martindale-Hubbell Preeminent Attorney Recognition (“AV”) rating for skill and ethics for attorneys based on professional peer reviews, and has been selected annually since 2016 as a top-rated “Super Lawyer” for business litigation.
Prior to entering private practice, Ryan served as a state prosecutor in the District Attorney’s office in Canadian County, Oklahoma. Ryan also served for four years (1994-98) as a Legislative Assistant to former U.S. Senator Don Nickles in Washington, D.C., in which capacity he served as the Senator’s chief legislative aide on issues involving the federal judiciary, Indian Affairs, transportation, agriculture and natural resources.
Ryan is very active in the local community, currently serving as Chairman of the Board of Directors of Mercy Hospital- Oklahoma City. Ryan co-founded and is a past president of the Downtown Club of Oklahoma City, and previously served on the Board of Trustees of the Oklahoma City National Memorial, the Board of Directors of the Central Oklahoma Red Cross, the Central Oklahoma YMCA and KIPP Charter School, the Executive Committee of the Board of Directors for the Oklahoma Academy of State Goals, the Legal Ethics Committee of the Oklahoma Bar Association and was a member of Leadership Oklahoma Class XIX. Ryan has also volunteered his time pro bono for Oklahoma Lawyers for Children, serving children at risk in the foster care system. At a younger age, Ryan earned the rank of Eagle Scout.
In 2008, Ryan was appointed by the Governor as a Commissioner representing the State of Oklahoma on the national Uniform Law Commission, and was reappointed in 2014 and 2018. In 2015, Ryan was appointed by the President of the national organization to the Executive Committee, and as chair of the national Legislative Council. Ryan has served on numerous committees within the organization, including drafting committees implementing the Hague Convention on Choice of Court Agreements (facilitating international contracts) and drafting a Model Tribal Probate Code. Ryan co-chairs the Committee on Attendance, and serves on the Committees on Scope and Program and State and Federal Relations.
Through his law practice, Ryan is also regularly appointed by multiple Courts as a “Receiver” over troubled businesses, tasked with either managing, rehabilitating, or liquidating the business for the benefit of creditors. In 2018, at the request of the Oklahoma Insurance Commissioner, the Oklahoma County District Court appointed Ryan as “Interim CEO” of Union Mutual Insurance Company, an Oklahoma-domiciled insurance company, that was successfully rehabilitated and emerged from receivership. Ryan served as Interim CEO for a period of six months during which time he identified and installed a permanent corporate leadership team. In addition, in 2019, Ryan was appointed by the U.S. District Court for the Western District of Oklahoma to serve as Chairperson of a three-member Commission to assist the Federal Court in determining just compensation to multiple landowners in a federal eminent domain pipeline action.
In 2020, Ryan was hired by Oklahoma Governor Kevin Stitt to serve as his Special Counsel for Native American Affairs. In this capacity, Ryan assists the Governor and his administration on issues arising from the U.S. Supreme Court’s recent decision in McGirt v. Oklahoma, through which the Court ruled the Creek Nation reservation still exists within the State of Oklahoma for purposes of criminal jurisdiction.
In January 2021, as authorized by Oklahoma law, Governor Stitt designated Ryan as the lead negotiator for the state in the discussions with Oklahoma's Native American tribes to address the foundational jurisdictional issues raised by the McGirt decision.
Ryan earned his law degree from the University of Oklahoma, and graduated magna cum laude from Boston College. Ryan also attended the L’Institut d’Etudes Politiques in Strasbourg, France. In his spare time, he enjoys coaching his children's activities, reading history, travel and archaeology. He is the co-author of “Opala: In Faithful Service to the Law,” a biography on former Oklahoma Supreme Court Justice Marian Opala, as well as "Principles and Perseverance: The Life of Don Nickles."
Ryan is admitted to practice before the Oklahoma Supreme Court and all Oklahoma state courts, the federal courts of the Western and Northern Districts of Oklahoma, the 10th Circuit Court of Appeals and the United States Tax Court.
Shareholder, Greenberg Traurig
Jennifer Weddle is the Co-Chair of Greenberg Traurig's American Indian Law Practice and has wide-ranging experience in complex regulatory and jurisdictional issues, with a focus in Indian law, handling a variety of matters for tribal and non-tribal clients. She has a dynamic, inter-disciplinary practice that centers on providing strategies for resolving complex jurisdictional problems. Much of her practice focuses in the areas of tribal economic development and natural resources development. Jennifer also has U.S. Supreme Court experience, including serving as one of the attorneys for the respondent in Nevada v. Hicks (2001) and representing the petitioners in Ute Mountain Ute Tribe v. Padilla (2012) and Grand Canyon Skywalk Development, LLC v. Grand Canyon Resort Corporation (2013) and cert stage amici in Saginaw-Chippewa Tribe v. NLRB (2016) and United States v. Cooley (2020) and amici on the merits in Lewis v. Clarke (2017), U.S. v. Washington (2018), Carpenter v. Murphy (2018), McGirt v. Oklahoma (2020), and United States v. Cooley (2021).
Jennifer's work also includes negotiations for mineral leasing employment matters and representation before federal agencies. She has also been involved in civil litigation, working on numerous complex federal, state and tribal litigation matters, including class action tort litigation and large commercial disputes. Her transactional experience includes oil and gas renewables projects throughout the west, as well as Endangered Species Act work. Jennifer frequently assists tribes, banks and non-bank entities with financing and regulatory matters with Indian law components. Jennifer has wide-ranging project siting experience, including the application of NEPA, NHPA, and other environmental laws on tribal and public lands, including with respect to large linear multi-state energy and infrastructure projects. Jennifer has deep transactional, regulatory and litigation experience involving very complex matters with both legal and policy components.
Jennifer is past President of the National Native American Bar Association and past two-term Chair of the Federal Bar Association Indian Law Section. She currently serves as the Tenth Circuit Representative on the American Bar Association Standing Committee on the Federal Judiciary, a role she has held since 2018, spanning the evaluations for more than two dozen federal judicial nominees at every level of the federal courts. She is a ’00 graduate of Harvard Law School and a ’97 graduate of the University of Michigan (Classical Languages and Literature).
Tazewell Taylor Professor of Law and William H. Cabell Research Professor, William & Mary Law School
Jonathan H. Adler joined the William & Mary law faculty as the Tazwell Taylor Professor of Law and William H. Cabell Research Professor in 2025. Prior to joining the faculty, he was the inaugural Johan Verheij Memorial Professor of Law and the founding Director of the Coleman P. Burke Center for Environmental Law at the Case Western Reserve University School of Law.
Professor Adler is the author or editor of seven books, including Climate Liberalism: Perspectives on Liberty, Property and Pollution (Palgrave, 2023), Marijuana Federalism: Uncle Sam and Mary Jane (Brookings Institution Press, 2020), Business and the Roberts Court (Oxford University Press, 2016) and Rebuilding the Ark: New Perspectives on Endangered Species Act Reform (AEI Press, 2011).
His articles have appeared in publications ranging from the Harvard Environmental Law Review and Yale Journal on Regulation to the Wall Street Journal, New York Times, and Washington Post. He has testified before Congress a dozen times, and his work has been cited in the U.S. Supreme Court. A 2024 study identified Professor Adler as the seventh most cited legal academic in administrative and environmental law from 2019 to 2023.
Professor Adler is a contributing editor to Civitas Outlook and a regular contributor to the popular legal blog, The Volokh Conspiracy. A regular commentator on constitutional and regulatory issues, he has appeared on numerous radio and television programs, ranging from the PBS Newshour and National Public Radio to the Fox News Channel and Entertainment Tonight.
Professor Adler is a senior fellow at the Property & Environment Research Center in Bozeman, Montana. In 2018, Professor Adler was elected to membership in the American Law Institute and helped co-found the organization Checks and Balances. In 2024, Professor Adler was appointed a public member of the Administrative Conference of the United States.
Professor Adler clerked for the Honorable David B. Sentelle on the U.S. Court of Appeals for the District of Columbia Circuit.
Partner, Hunton Andrews Kurth
Mr. Leopold is a Partner with the law firm of Hunton Andrews Kurth in Washington, DC. He is the former Senate-confirmed general counsel of the U.S. EPA from 2018-2020, and he previously was a litigator at the U.S. Department of Justice, Environment and Natural Resources Division form 2007-2013. As EPA General Counsel, he counseled on the development and defense of EPA’s most significant rulemakings, including the Affordable Clean Energy Rule, the Navigable Waters Protection Rule, and the Safe Affordable Fuel‐Efficient (SAFE) Vehicles Rule, as well as several pesticide actions. He was personally involved in defending EPA in litigation, including the County of Maui v. Hawaii Wildlife Fund in the U.S. Supreme Court. Mr. Leopold’s prior government service also includes working in Florida as general counsel of the Florida Department of Environmental Protection. He now represents clients in regulatory advocacy before federal agencies, litigates federal environmental actions, and defends clients with EPA enforcement issues.
Chief of Staff and Associate Chief Counsel, U.S. Chamber Litigation Center
Stephanie Maloney is chief of staff and associate chief counsel at the U.S. Chamber Litigation Center, the litigation arm of the U.S. Chamber of Commerce. In this capacity, Maloney handles a variety of matters for the Chamber, including environment and energy litigation.
Most recently, Maloney served as Chief of Staff and Counsel in the Environment and Natural Resources Division of the U.S. Department of Justice. In that capacity, she directed litigation strategy, oversaw case briefing, and managed coordination and communication with agency clients in priority cases. And she served as government counsel in cases arising under various environmental and natural resources laws.
Before that, Maloney practiced as an associate in the Appellate and Critical Motions Practice Group at Winston & Strawn LLP. Her work focused on briefing and strategy in complex commercial and appellate litigation at the federal and state level, including merits and amicus curiae briefs to the Supreme Court of the United States.
Maloney served as a law clerk to both the Honorable Edith Brown Clement, of the U.S. Court of Appeals for the Fifth Circuit, and the Honorable Stephen J. Murphy, III, of the U.S. District Court for the Eastern District of Michigan. She graduated cum laude from Notre Dame Law School, where she served as Symposium Editor of the Notre Dame Law Review, and summa cum laude from Loyola University Maryland, where she received a B.A. in Political Science. Maloney also holds a master’s degree in theology from Emory University.
Partner, Vinson & Elkins
Corinne principally practices in environmental law, with an emphasis on litigation, regulatory compliance, internal investigations, and defense against government investigations and enforcement actions.
Corinne draws on wide experience at the U.S. Department of Justice, including serving as Senior Counsel in the Office of the Associate Attorney General, which oversees all civil litigation on behalf of the United States, and as Counselor in the Office of the Attorney General.
Corinne most recently served as Counsel and Chief of Staff in the Environment and Natural Resources Division of the U.S. Department of Justice, where she assisted in managing a 600-person division that included 400 lawyers. In this role she helped manage the Division’s civil and criminal litigation arising under more than 150 environmental and natural resources laws.
She also worked closely with the General Counsel’s Offices for multiple federal agencies, including the EPA, Departments of Interior, Defense, Energy, Commerce, and Agriculture, as well as the White House and Counsel on Environmental Quality to advise high-ranking officials on policy and litigation risks associated with the environmental and natural resource laws.
She has personally argued cases in three U.S. Courts of Appeals, and multiple district courts, and served as the lead or co-lead counsel in district court litigation defending agency regulations, approvals, and permits related to oil and gas operations and other energy extraction projects.
Her roles in government have given her a unique perspective into the decision-making processes in the federal government.
In the private sector, Corinne counsels clients on environmental compliance across a variety of industries, including energy, chemical, manufacturing, and mining sectors. In the transactional context, she assists in the drafting and negotiating of the environmental terms in purchase and sale agreements, lease agreements, credit agreements, and disclosures for debt and equity offerings and public filings. She has also drafted comments on behalf of clients to agencies on proposed rules with significant implications for the oil and gas industry.
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
Partner, Squire Patton Boggs (Denver)
Keith Bradley represents companies before US federal and state agencies across a spectrum of regulatory regimes. As a senior advisor to the General Counsel of the US Department of Energy (DOE) until recently, he organized the defense of high-stakes litigation; advised on prominent departmental regulatory reforms, such as those in energy conservation and nuclear export controls; and was the department’s lead lawyer on implementation of the Iran nuclear deal.
Before joining DOE, he was counsel in the Legal Division of the Consumer Financial Protection Bureau, where he helped draft significant regulations, counseled senior agency executives on administrative and constitutional law, and worked with enforcement teams on some of the bureau’s most significant matters. Since leaving DOE, he has served as senior counsel for a corporation in Denver, where he built and ran the compliance management system and helped introduce regulators to the company’s novel business model.
Before his government service, Bradley engaged in administrative and regulatory litigation, appellate litigation and complex commercial litigation at a major US-based law firm.
Bradley is also a physicist who developed nanoelectronic sensor systems at a technology startup. He has 13 issued patents to his name.
Partner, Perkins Coie LLP
Thomas (Tom) Jensen provides strategic regulatory counsel, litigation support and legislative advocacy to clients in the environment, energy and natural resources sectors. With considerable experience in and deep knowledge of environmental and resources law, Tom delivers sophisticated counsel to clients involved with energy and water pipelines, electric transmission projects, transportation facilities, hydropower and other energy generation assets, and other capital-intensive infrastructure projects. Tom currently serves as lead outside regulatory and litigation counsel to a major interstate natural gas pipeline project and recently led the successful permitting and siting effort for a 500 kV interstate electric transmission project.
A nationally recognized practitioner of natural resources and environmental law, Tom advises clients throughout the business, government and nonprofit sectors, reflecting his credentials not only in the legal industry, but also in the public sector. He served as the majority counsel to the U.S. Senate Committee on Energy and Natural Resources and was the associate director for natural resources on the White House Council on Environmental Quality. He has also written numerous pieces of legislation that have been enacted into federal law and has published and lectured widely in the field.
Developers of innovative, challenging energy projects and new environmental initiatives seek out Tom’s guidance for his insight into protected natural and cultural resources, public lands and marine areas, takings law and the National Environmental Policy Act. A key player in helping clients develop and defend their project strategies, Tom leads teams involved in siting, property and right-of-way acquisition, federal, state, tribal and local permitting, settlement negotiations and litigation.
Tom speaks frequently on environmental issues, from protected species mitigation to siting strategy, water development, water quality, climate adaptation and marine energy development. He also writes and speaks on conservation of at-risk wildlife and western range lands.
Partner, Marzulla Law
Roger J. Marzulla is one of the nation’s leading environmental, water, and property lawyers. As Assistant Attorney General in charge of the U.S. Justice Department’s Environment and Natural Resources Division, Roger learned first hand the operations and litigation styles of his client agencies: EPA, Interior Department, Bureau of Reclamation, Fish and Wildlife Service, National Marine Fisheries Service, Department of Transportation, Department of Commerce. In 1997, he co-founded Marzulla Law, where he brings to bear more than 35 years of expertise representing companies and individuals in industries as diverse as land and project development, aerospace, chemicals, oil and gas, mining, timber, manufacturing, computers, agriculture and water service.
Roger began his legal career as a trial lawyer in San Jose, California, after graduating magna cum laude from the University of Santa Clara School of Law. As a partner in Matthews & Marzulla he represented developers, title and construction companies, shopping centers, apartment owners and lenders in litigation throughout California. In 1981 he moved to Denver to become President of Mountain States Legal Foundation, litigating environmental and natural resource cases across the West.
In 1983 Roger joined the Justice Department as Special Litigation Counsel. He was subsequently promoted to Deputy Assistant Attorney General and, in 1987, was confirmed by the Senate as Assistant Attorney General in charge of the Environment and Natural Resources Division. At the Justice Department, Roger helped create litigation strategies for government programs as diverse as Superfund, the Clean Air Act, off-shore oil leasing, environmental crimes, federal facility clean-up, wetlands, endangered species and hazardous waste enforcement, as well as Presidential Order EO 12,630 (Government Interference with Private Property Rights).
In 1989 Roger returned to private law practice, successively heading the environmental law practices of the Powell, Goldstein and Akin, Gump law firms.
Since 1997, as a partner in Marzulla Law, Roger has continued to represent corporate and business clients in a wide array of environmental and property issues in courts across the country, frequently in litigation against the United States. He also assists clients in attaining compliance with environmental, health and safety regulation, and in avoiding risks in transactions.
Assistant Attorney General, Environment and Natural Resources Division, U.S. Department of Justice
Jeffrey Bossert Clark was born in Philadelphia, Pennsylvania on April 17, 1967. He is a graduate of Harvard University (A.B. in economics and history, 1989), the University of Delaware (M.A. in urban affairs and public policy, 1993), and the Georgetown University Law Center (J.D., 1995).
Mr. Clark began his career working for the State of Delaware’s Department of Finance, Division of Revenue as an economics analyst in the field of tax policy. During his tenure from 1989 to 1992, he authored several white papers analyzing Delaware revenue sources. Delaware also selected Mr. Clark to submit an economic report and affidavit to the United States Supreme Court in the original jurisdiction case of Delaware v. New York, 507 U.S. 490 (1993).
He entered Georgetown’s law school in 1992 where he earned honors as an articles editor of the Georgetown Law Journal, an Olin Law & Economics Fellow, and a member of the Order of the Coif. From 1995 to 1996, Mr. Clark clerked for Judge Boggs of the U.S. Court of Appeals of the Sixth Circuit. Mr. Clark then joined the law firm of Kirkland & Ellis as an associate from 1996-2001. He worked as an appellate litigator on numerous Supreme Court and other appellate cases and developed expertise in administrative law, statutory interpretation, as well as antitrust, labor, environmental, and telecommunications law.
Mr. Clark went on to serve in ENRD from 2001-2005 as a Deputy Assistant Attorney General selected by Attorney General Ashcroft and Assistant Attorney General Tom Sansonetti. In that capacity, he supervised ENRD’s Appellate and Indian Resources Sections. He reviewed, edited, and contributed to virtually every brief that ENRD filed in the Courts of Appeals, including several cases of exceptional significance that he personally briefed and argued. During his service in the early 2000s, Mr. Clark argued and won numerous cases in multiple U.S. Courts of Appeals and worked on all Supreme Court cases arising out of ENRD’s work.
In 2005, Mr. Clark returned to Kirkland & Ellis LLP as a partner, where he litigated until his return to ENRD in 2018. There he worked on numerous multi-billion-dollar matters and continued to argue many appellate cases. His practice operated at all levels — appellate litigation, trial court litigation, agency proceedings, and regulatory and litigation counseling. He has been named a Super Lawyer for multiple years running, highlighted in the Legal 500, named to the “Legal Who’s Who for Environmental Law” in Corporate Responsibility Magazine, rated A.V. preeminent by Martindale Hubbell, and named a member of the National Association of Distinguished Counsel’s Nation’s One Percent. He also was named one of America’s Top 100 High Stakes Litigators.
President Trump nominated Mr. Clark to be the Assistant Attorney General of the Environment and Natural Resources Division (ENRD) on June 7, 2017. He was confirmed by the U.S. Senate on October 11, 2018 and sworn into office on November 1, 2018, followed by an investiture ceremony on November 15, 2018.
McGirt: One Year Later
Eric Grant, Ryan Leonard, Jennifer H. Weddle
As the 2020 term concluded, the US Supreme Court ruled in a 5-4 decision that...
McGirt: One Year Later
Eric Grant, Ryan Leonard, Jennifer H. Weddle
As the 2020 term concluded, the US Supreme Court ruled in a 5-4 decision that...
McGirt: One Year Later
Environmental Law & Property Rights Practice Group Teleforum
TeleforumThe First 100 Days: Environmental Regulation & Policy
Chicago Lawyers Chapter - Online Event
Capital Conversations: Jeffrey Clark, Assistant Attorney General, Environment and Natural Resources Division (ENRD), Department of Justice
Jeffrey Bossert Clark
The Environment and Natural Resources Division of the Department of Justice recently announced a policy...
Capital Conversations: Jeffrey Clark, Assistant Attorney General, Environment and Natural Resources Division (ENRD), Department of Justice
The Limits of EPA Authority: Supplemental Environmental Projects
TeleforumCourthouse Steps Preview: United States Forest Service v. Cowpasture River Preservation Association
Keith Bradley, Thomas C. Jensen, Roger J. Marzulla
On February 24, 2020 the Supreme Court will hear argument in two consolidated cases, U.S....
Courthouse Steps Preview: United States Forest Service v. Cowpasture River Preservation Association
TeleforumJuliana v. United States & Climate Change Litigation
Pittsburgh Lawyers Chapter
Pittsburgh, PAThe Trump Administration’s Proposed Redefinition of “Navigable Waters” – Too Much, Too Little, or Just Right?
Jonathan H. Adler, Jeffrey Bossert Clark, Jon Devine, Tony Francois, Andrew R. Varcoe
The seventh annual Executive Branch Review Conference took place on May 8, 2019, at the...