Partner, Baker Hostetler LLP
David Rivkin is a member of the firm's litigation, international and environmental teams and is co-leader of the firm's national appellate practice. He has extensive experience in constitutional, administrative and international law litigation and has been involved in numerous high-profile cases. With his prior experience in the government sector, David draws on a wealth of knowledge when providing compliance advice to companies and handling enforcement proceedings before government agencies on issues arising out of multilateral and unilateral sanctions, the Foreign Corrupt Practices Act (FCPA), anti-boycott issues, bankruptcy and financial fraud matters, and environmental and energy issues.
David has developed and implemented legislative, regulatory and litigation initiatives for two presidential administrations. Over the years, he has published hundreds of articles, op-eds, book reviews and book chapters on a variety of international, legal, constitutional, defense, arms control, foreign policy, environmental and energy issues for various newspapers and magazines, including The Wall Street Journal, The Washington Post, The New York Times, USA Today and The Los Angeles Times, and has been a frequent commentator and guest on TV and radio shows including ABC, CBS, NBC, CNN, Fox News, NPR and PBS.
Partner, Baker & Hostetler LLP
Lee A. Casey focuses on federal environmental, constitutional and international law and Alien Tort Statute issues. He also advises clients on compliance issues under the Foreign Corrupt Practices Act (FCPA), U.S. trade sanctions regimes, and federal ethics requirements. Mr. Casey’s practice includes federal, district and appellate court litigation, as well as matters before federal agencies. Prior to joining BakerHostetler, Mr. Casey was an associate with Hunton & Williams, practicing in international, environmental and constitutional law. From 2004 through 2007 he served as an member of the United Nations Subcommission on the Promotion and Protection of Human Rights.
From 1986 to 1993, Mr. Casey served in various capacities in the federal government, including the Office of Legal Policy (1986-90) and the Office of Legal Counsel (1992-93) at the U.S. Department of Justice and served as Deputy Associate General Counsel at the U.S. Department of Energy (1990-92). The Office of Legal Counsel is responsible for advising the Attorney General and the White House on issues of constitutional law and statutory interpretation. The Office of Legal Policy served as a strategic “think tank” for the Reagan Justice Department and was responsible for reviewing candidates for appointments to the federal bench.
Before joining the government in 1986, Mr. Casey was an associate in the Los Angeles firm of Mitchell, Silberberg & Knupp, practicing in the litigation section, with an emphasis on copyright, contract and First Amendment issues. From 1984 to 1985, Mr. Casey served as Law Clerk to the Honorable Alex Kozinski, then Chief Judge of the United States Claims Court. From 1982 to 1984, he practiced at the Detroit firm of Dykema Gossett, focusing on corporate, securities, commercial and intellectual property litigation, and from 1990 through 1994, he served as an Adjunct Professor of Law at George Mason University School of Law in Arlington, Virginia.
Among the chapters, articles and papers that Mr. Casey has authored or co-authored are: “International Law and the Nation-State at the U.N.,” Reclaiming the Language of Freedom at the United Nations: A Guide for U.S. Policymakers, The Heritage Foundation (2006) (with David B. Rivkin, Jr.); “The Dangerous Myth of Universal Jurisdiction,” A Country I Do Not Recognize (ed. Robert H. Bork) (2005) (with David B. Rivkin, Jr.); “Leashing the Dogs of War,” The National Interest (Fall 2003) (with David B. Rivkin, Jr.); “The Limits of Legitimacy: The Rome Statute’s Unlawful Application to Non-State Parties,” 44 Va.J.Int’l L. 63 (Fall 2003) (with David B. Rivkin, Jr.); “Devil’s Advocates: The Danger of Judging Lawyers By Their Clients,” Policy Review (Feb. and Mar. 2002) (with David B. Rivkin, Jr.); “The Case Against the International Criminal Court,” 25 Fordham Int’l L.J. 840 (2002); “Europe in the Balance: The Alarmingly Undemocratic Drift of the European Union,” Policy Review (June and July 2001) (with David B. Rivkin Jr.); “Against an International Criminal Court,” Commentary, May 1998 (with David B. Rivkin, Jr.); “Federalism (Cont’d.),” Commentary, December 1996 (with David B. Rivkin, Jr.); “Presidents and War Powers: Another View,” Common Sense, Winter 1996 (with David B. Rivkin, Jr.); “How Binding Are Contracts?” The American Enterprise, Nov./Dec. 1993 (with David B. Rivkin, Jr.); and “Pirate Constitutionalism: An Essay in Self-Government,” 8 J. of L. & Politics 477 (1992).
Mr. Casey is a member of the California, Michigan and District of Columbia Bar Associations.
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.
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.
Professor of Law, George Mason University School of Law
With his work in regulatory takings and other aspects of property law, professor of law Steven Eagle plays an important role in the ongoing dialogue among American legal scholars, lawyers, and judges on the proper interpretation of property rights in the Constitution. He is the author of a leading property treatise and scholarly and popular articles and teaches in programs for judges and the practicing bar.
Professor Eagle came to George Mason in 1987 and also has taught at the law schools of Vanderbilt University, the University of Toledo, and Pace University. He earned his B.B.A. from the City College of New York (1965) and his J.D. from Yale Law School (1970). Professor Eagle teaches the first-year course, Property, Land Use Planning, and an advanced constitutional law seminar on property rights.
Senior Attorney, Pacific Legal Foundation
Reed Hopper is a Senior Attorney in PLF’s Environmental Law Practice Group. He oversees the Foundation’s Endangered Species Act Program that is designed to ensure that species protections are balanced with individual rights, the rule of law, and other social values. Reed also oversees PLF’s Clean Water Act Project that targets illegal federal regulation of local land and water use.
Reed has always had a strong patriotic spirit and a desire to serve his country. Before joining PLF in 1987, Reed served as an Environmental Protection Officer and Hearing Officer in the U.S. Coast Guard where he gained a love for the law. He also loves our constitutional way of life and cannot tolerate injustice. PLF affords him the opportunity to rectify unjust actions perpetrated by overreaching government. He enjoys getting up each morning to fight for a just cause.
Reed has litigated and won precedent-setting environmental and land use cases at all levels of the state and federal courts, including the U.S. Supreme Court. He has published numerous articles and testified before Congress as an expert witness.
Reed graduated from the University of California, Davis, with a Bachelors Degree in German and major work in biochemistry. He also did graduate business studies at California State University and Tulane University and earned his Juris Doctor Degree from the University of the Pacific, McGeorge School of Law.
Professor of Law Emeritus; Senior Fellow for Climate Policy, Environmental Law Center, Vermont Law School
Patrick A. Parenteau is Emeritus Professor of Law and Senior Fellow for Climate Policy in the Environmental Law Center at Vermont Law School. He previously served as Director of the Environmental Law Center and was the founding director of the EAC (formerly the Environmental and Natural Resources Law Clinic) in 2004.
Professor Parenteau has an extensive background in environmental and natural resources law. His previous positions include Vice President for Conservation with the National Wildlife Federation in Washington, DC (1976-1984); Regional Counsel to the New England Regional Office of the EPA in Boston (1984-1987); Commissioner of the Vermont Department of Environmental Conservation (1987-1989); and Senior Counsel with the Perkins Coie law firm in Portland, Oregon (1989-1993).
Professor Parenteau has been involved in drafting, litigating, implementing, teaching, and writing about environmental law and policy for over three decades. His current focus is on confronting the profound challenges of climate change through his teaching, publishing, public speaking and litigation.
Professor Parenteau is a Fulbright US Scholar and a Fellow in the American College of Environmental Lawyers. In 2005 he received the National Wildlife Federation’s Conservation Achievement Award in recognition of his contributions to wildlife conservation and environmental education. In 2016 he received the Kerry Rydberg Award for excellence in public interest environmental law.
Professor Parenteau holds a B.S. from Regis University, a J.D. from Creighton University, and an LLM in Environmental Law from the George Washington U.
Robert F. Stanton Professor of Law, University of Maryland Carey School of Law
Robert V. Percival is the Robert F. Stanton Professor of Law and the Director of the Environmental Law Program at the University of Maryland School of Law. He received a B.A. summa cum laude from Macalester College, a J.D. from Stanford Law School and an M.A. in economics from Stanford University. At Stanford Percival was named the Nathan Abbott Scholar for graduating first in his law school class. Following graduation, he served as a law clerk for Judge Shirley M. Hufstedler of the U.S. Court of Appeals for the Ninth Circuit and for U.S. Supreme Court Justice Byron R. White. He joined the Maryland faculty in 1987 after serving as a senior attorney for the Environmental Defense Fund. Percival has served as a visiting professor of law at Harvard Law School, Georgetown University Law Center, the China University of Political Science and Law (Beijing), and Comenius University (Bratislava). He is the principal author of a leading environmental law casebook, now in its 9th edition, and the author of several articles about the Supreme Court and presidential authority over executive agencies. Percival wrote one of the first articles on the propriety of consent decrees to effectuate and enforce federal law “The Bounds of Consent: Consent Decrees, Settlements and Federal Environmental Policymaking,” 1987 Univ. Chic. Leg. F. 327 (1987). He also is the author of the first comprehensive analyses of what the papers of the late Justices Thurgood Marshall and Harry Blackmun reveal about the Supreme Court’s handling of environmental cases (“Environmental Law in the Supreme Court: Highlights from the Blackmun Papers,” 35 ELR 10637 (2005), and “Environmental Law in the Supreme Court: Highlights from the Marshall Papers,” 13 ELR 10606 (Oct. 1993)).
Senior Attorney, Pacific Legal Foundation
Reed Hopper is a Senior Attorney in PLF’s Environmental Law Practice Group. He oversees the Foundation’s Endangered Species Act Program that is designed to ensure that species protections are balanced with individual rights, the rule of law, and other social values. Reed also oversees PLF’s Clean Water Act Project that targets illegal federal regulation of local land and water use.
Reed has always had a strong patriotic spirit and a desire to serve his country. Before joining PLF in 1987, Reed served as an Environmental Protection Officer and Hearing Officer in the U.S. Coast Guard where he gained a love for the law. He also loves our constitutional way of life and cannot tolerate injustice. PLF affords him the opportunity to rectify unjust actions perpetrated by overreaching government. He enjoys getting up each morning to fight for a just cause.
Reed has litigated and won precedent-setting environmental and land use cases at all levels of the state and federal courts, including the U.S. Supreme Court. He has published numerous articles and testified before Congress as an expert witness.
Reed graduated from the University of California, Davis, with a Bachelors Degree in German and major work in biochemistry. He also did graduate business studies at California State University and Tulane University and earned his Juris Doctor Degree from the University of the Pacific, McGeorge School of Law.
Senior Attorney, Pacific Legal Foundation
Damien Schiff is a senior attorney at Pacific Legal Foundation. He leads its environmental practice group, a unique initiative that draws broadly from PLF’s expertise and success in property rights and separation of powers litigation. Over the years, Damien has represented hundreds of landowners and property rights advocates to defend their liberties against heavy-handed and unwarranted environmental and land-use regulation. His litigation experience includes Sackett v. U.S. Environmental Protection Agency, a groundbreaking decision in which the U.S. Supreme Court upheld the right of landowners to challenge Clean Water Act compliance orders issued by EPA, and Contoski v. Norton, PLF’s successful effort to force the federal government to make good on its promise to delist the bald eagle from the Endangered Species Act.
Besides litigation, Damien has written academic articles on a variety of subjects, including the Endangered Species Act, the Clean Water Act, greenhouse gas torts, the duty to rescue, and international water law. He has appeared on a variety of television and radio programs and has been quoted in The New York Times, The Wall Street Journal, Harper’s Magazine, and The Economist, among other publications.
He obtained his law degree magna cum laude from the University of San Diego School of Law, and his undergraduate degree magna cum laude from Georgetown University. While at USD, he was a research assistant for Professor Bernard Siegan, a leading constitutional theorist and advocate for property rights and economic liberty. Immediately prior to joining PLF, Damien clerked for Judge (and former PLF attorney) Victor Wolski of the United States Court of Federal Claims. Damien credits the mentoring and examples of Professor Siegan and Judge Wolski for his decision to pursue a career in liberty-based public interest litigation.
Damien lives in Sacramento with his wife, two young sons, four chickens, and a cat named Princess. In his off hours he enjoys stamp collecting, Gregorian chant, and martinis—preferably at the same time.
Partner, Baker Hostetler LLP
David Rivkin is a member of the firm's litigation, international and environmental teams and is co-leader of the firm's national appellate practice. He has extensive experience in constitutional, administrative and international law litigation and has been involved in numerous high-profile cases. With his prior experience in the government sector, David draws on a wealth of knowledge when providing compliance advice to companies and handling enforcement proceedings before government agencies on issues arising out of multilateral and unilateral sanctions, the Foreign Corrupt Practices Act (FCPA), anti-boycott issues, bankruptcy and financial fraud matters, and environmental and energy issues.
David has developed and implemented legislative, regulatory and litigation initiatives for two presidential administrations. Over the years, he has published hundreds of articles, op-eds, book reviews and book chapters on a variety of international, legal, constitutional, defense, arms control, foreign policy, environmental and energy issues for various newspapers and magazines, including The Wall Street Journal, The Washington Post, The New York Times, USA Today and The Los Angeles Times, and has been a frequent commentator and guest on TV and radio shows including ABC, CBS, NBC, CNN, Fox News, NPR and PBS.
Partner, Baker & Hostetler LLP
Lee A. Casey focuses on federal environmental, constitutional and international law and Alien Tort Statute issues. He also advises clients on compliance issues under the Foreign Corrupt Practices Act (FCPA), U.S. trade sanctions regimes, and federal ethics requirements. Mr. Casey’s practice includes federal, district and appellate court litigation, as well as matters before federal agencies. Prior to joining BakerHostetler, Mr. Casey was an associate with Hunton & Williams, practicing in international, environmental and constitutional law. From 2004 through 2007 he served as an member of the United Nations Subcommission on the Promotion and Protection of Human Rights.
From 1986 to 1993, Mr. Casey served in various capacities in the federal government, including the Office of Legal Policy (1986-90) and the Office of Legal Counsel (1992-93) at the U.S. Department of Justice and served as Deputy Associate General Counsel at the U.S. Department of Energy (1990-92). The Office of Legal Counsel is responsible for advising the Attorney General and the White House on issues of constitutional law and statutory interpretation. The Office of Legal Policy served as a strategic “think tank” for the Reagan Justice Department and was responsible for reviewing candidates for appointments to the federal bench.
Before joining the government in 1986, Mr. Casey was an associate in the Los Angeles firm of Mitchell, Silberberg & Knupp, practicing in the litigation section, with an emphasis on copyright, contract and First Amendment issues. From 1984 to 1985, Mr. Casey served as Law Clerk to the Honorable Alex Kozinski, then Chief Judge of the United States Claims Court. From 1982 to 1984, he practiced at the Detroit firm of Dykema Gossett, focusing on corporate, securities, commercial and intellectual property litigation, and from 1990 through 1994, he served as an Adjunct Professor of Law at George Mason University School of Law in Arlington, Virginia.
Among the chapters, articles and papers that Mr. Casey has authored or co-authored are: “International Law and the Nation-State at the U.N.,” Reclaiming the Language of Freedom at the United Nations: A Guide for U.S. Policymakers, The Heritage Foundation (2006) (with David B. Rivkin, Jr.); “The Dangerous Myth of Universal Jurisdiction,” A Country I Do Not Recognize (ed. Robert H. Bork) (2005) (with David B. Rivkin, Jr.); “Leashing the Dogs of War,” The National Interest (Fall 2003) (with David B. Rivkin, Jr.); “The Limits of Legitimacy: The Rome Statute’s Unlawful Application to Non-State Parties,” 44 Va.J.Int’l L. 63 (Fall 2003) (with David B. Rivkin, Jr.); “Devil’s Advocates: The Danger of Judging Lawyers By Their Clients,” Policy Review (Feb. and Mar. 2002) (with David B. Rivkin, Jr.); “The Case Against the International Criminal Court,” 25 Fordham Int’l L.J. 840 (2002); “Europe in the Balance: The Alarmingly Undemocratic Drift of the European Union,” Policy Review (June and July 2001) (with David B. Rivkin Jr.); “Against an International Criminal Court,” Commentary, May 1998 (with David B. Rivkin, Jr.); “Federalism (Cont’d.),” Commentary, December 1996 (with David B. Rivkin, Jr.); “Presidents and War Powers: Another View,” Common Sense, Winter 1996 (with David B. Rivkin, Jr.); “How Binding Are Contracts?” The American Enterprise, Nov./Dec. 1993 (with David B. Rivkin, Jr.); and “Pirate Constitutionalism: An Essay in Self-Government,” 8 J. of L. & Politics 477 (1992).
Mr. Casey is a member of the California, Michigan and District of Columbia Bar Associations.
Partner, Baker & Hostetler LLP
Mark DeLaquil is a first-chair trial and appellate advocate who focuses on complex environmental and regulatory proceedings, First Amendment practice and political law.
Mark has been recognized by Chambers USA for environmental litigation (2015 to 2024) and has been named by Law360 as one of the "Top 5 Environmental Attorneys Under the Age of 40" on two occasions.
Senior Attorney, Pacific Legal Foundation
Reed Hopper is a Senior Attorney in PLF’s Environmental Law Practice Group. He oversees the Foundation’s Endangered Species Act Program that is designed to ensure that species protections are balanced with individual rights, the rule of law, and other social values. Reed also oversees PLF’s Clean Water Act Project that targets illegal federal regulation of local land and water use.
Reed has always had a strong patriotic spirit and a desire to serve his country. Before joining PLF in 1987, Reed served as an Environmental Protection Officer and Hearing Officer in the U.S. Coast Guard where he gained a love for the law. He also loves our constitutional way of life and cannot tolerate injustice. PLF affords him the opportunity to rectify unjust actions perpetrated by overreaching government. He enjoys getting up each morning to fight for a just cause.
Reed has litigated and won precedent-setting environmental and land use cases at all levels of the state and federal courts, including the U.S. Supreme Court. He has published numerous articles and testified before Congress as an expert witness.
Reed graduated from the University of California, Davis, with a Bachelors Degree in German and major work in biochemistry. He also did graduate business studies at California State University and Tulane University and earned his Juris Doctor Degree from the University of the Pacific, McGeorge School of Law.
Senior Attorney, Pacific Legal Foundation
Damien Schiff is a senior attorney at Pacific Legal Foundation. He leads its environmental practice group, a unique initiative that draws broadly from PLF’s expertise and success in property rights and separation of powers litigation. Over the years, Damien has represented hundreds of landowners and property rights advocates to defend their liberties against heavy-handed and unwarranted environmental and land-use regulation. His litigation experience includes Sackett v. U.S. Environmental Protection Agency, a groundbreaking decision in which the U.S. Supreme Court upheld the right of landowners to challenge Clean Water Act compliance orders issued by EPA, and Contoski v. Norton, PLF’s successful effort to force the federal government to make good on its promise to delist the bald eagle from the Endangered Species Act.
Besides litigation, Damien has written academic articles on a variety of subjects, including the Endangered Species Act, the Clean Water Act, greenhouse gas torts, the duty to rescue, and international water law. He has appeared on a variety of television and radio programs and has been quoted in The New York Times, The Wall Street Journal, Harper’s Magazine, and The Economist, among other publications.
He obtained his law degree magna cum laude from the University of San Diego School of Law, and his undergraduate degree magna cum laude from Georgetown University. While at USD, he was a research assistant for Professor Bernard Siegan, a leading constitutional theorist and advocate for property rights and economic liberty. Immediately prior to joining PLF, Damien clerked for Judge (and former PLF attorney) Victor Wolski of the United States Court of Federal Claims. Damien credits the mentoring and examples of Professor Siegan and Judge Wolski for his decision to pursue a career in liberty-based public interest litigation.
Damien lives in Sacramento with his wife, two young sons, four chickens, and a cat named Princess. In his off hours he enjoys stamp collecting, Gregorian chant, and martinis—preferably at the same time.
Dr. John Eastman is the former Henry Salvatori Professor of Law & Community Service and former Dean at Chapman University's Dale E. Fowler School of Law, where he had been a member of the faculty since 1999, specializing in Constitutional Law, Legal History, and Property. He is a founding director of the Center for Constitutional Jurisprudence, a public interest law firm affiliated with the Claremont Institute that he founded in 1999. He has a Ph.D. in Government from the Claremont Graduate School and a J.D. from the University of Chicago Law School, and a B.A. in Politics and Economics from the University of Dallas. He serves as the Chairman of the Board of the National Organization for Marriage.
Prior to joining the Chapman law faculty, Dr. Eastman served as a law clerk to the Honorable Clarence Thomas, Associate Justice, Supreme Court of the United States, and to the Honorable J. Michael Luttig, Judge, United States Court of Appeals for the Fourth Circuit and practiced law with the national law firm of Kirkland & Ellis. Dr. Eastman has also represented numerous clients in important constitutional law matters and has argued before the Supreme Court. On behalf of the Claremont Institute Center for Constitutional Jurisprudence, he has participated as amicus curiae before the Supreme Court of the United States, U.S. Courts of Appeals, and State Supreme Courts in more than one hundred cases of constitutional significance, including Boy Scouts of America v. Dale, Zelman v. Simmons-Harris (the school vouchers case), Kelo v. New London, Ct. (eminent domain), and Van Orden v. Perry (the 10 Commandments case). He has also appeared as an expert legal commentator on numerous television and radio programs, including C-SPAN, Fox News, PBS, NewsHour, and The O'Reilly Factor.
Counsel to the Firm, Cascadia Cross-Border Law
Margaret Stock focuses her practice on immigration and citizenship law. She is a nationally known expert on immigration and national security laws, and has testified regularly before Congressional committees on immigration, homeland security, and military matters. As a retired Lieutenant Colonel in the Military Police, U.S. Army Reserve, Margaret has extensive experience with U.S. military issues. She has also worked as a professor at the United States Military Academy at West Point, and she has served as an adjunct instructor at the University of Alaska. Margaret served as a member of the American Bar Association Commission on Immigration from 2008-2012. She regularly authors articles on military-related immigration issues, and is well-versed on “parole in place” for military family members and the Military Accessions Vital to the National Interest (“MAVNI”) Program. Margaret authored the book Immigration Law & the Military, which was published by the American Immigration Lawyers Association in 2012.
Partner, Baker Hostetler LLP
David Rivkin is a member of the firm's litigation, international and environmental teams and is co-leader of the firm's national appellate practice. He has extensive experience in constitutional, administrative and international law litigation and has been involved in numerous high-profile cases. With his prior experience in the government sector, David draws on a wealth of knowledge when providing compliance advice to companies and handling enforcement proceedings before government agencies on issues arising out of multilateral and unilateral sanctions, the Foreign Corrupt Practices Act (FCPA), anti-boycott issues, bankruptcy and financial fraud matters, and environmental and energy issues.
David has developed and implemented legislative, regulatory and litigation initiatives for two presidential administrations. Over the years, he has published hundreds of articles, op-eds, book reviews and book chapters on a variety of international, legal, constitutional, defense, arms control, foreign policy, environmental and energy issues for various newspapers and magazines, including The Wall Street Journal, The Washington Post, The New York Times, USA Today and The Los Angeles Times, and has been a frequent commentator and guest on TV and radio shows including ABC, CBS, NBC, CNN, Fox News, NPR and PBS.
Founding Partner, Boyden Gray & Associates
Ambassador C. Boyden Gray is the founding partner of Boyden Gray & Associates, a law and strategy firm in Washington, D.C., focused on constitutional and regulatory issues.
Mr. Gray worked in the White House for twelve years, first as counsel to the Vice President during the Reagan administration and then as White House Counsel to President George H.W. Bush. In the Reagan administration, he was Counsel to the Presidential Task Force on Regulatory Relief, for which he wrote the original Executive Order 12291 requiring cost-benefit analysis and White House review of regulations (later renumbered as current EO 12866). In the George H.W. Bush Administration, Mr. Gray was in charge of judicial selection and was also instrumental in the enactment of the Clean Air Act Amendments of 1990, the Energy Policy Act of 1992, and a cap-and-trade system for acid rain emissions. In 1993, he received the Presidential Citizens Medal. Under President George W. Bush, Mr. Gray was U.S. Ambassador to the European Union and U.S. Special Envoy to Europe for Eurasian Energy.
Mr. Gray practiced law for 25 years at the law firm of Wilmer, Cutler & Pickering and was chairman of the Administrative Law and Regulatory Practice Section of the American Bar Association from 2000 to 2002. Early in his career, Mr. Gray helped to develop the Business Roundtable and served as its first counsel. He is an adjunct professor at Antonin Scalia Law School and a former adjunct professor at NYU Law School (teaching energy and environmental law). Mr. Gray is on the Board of Directors of the Atlantic Council, the Federalist Society, Reason Foundation, and the Trust for the National Mall.
Mr. Gray earned his A.B. magna cum laude from Harvard, where he was an editor of the Crimson, and his J.D. with high honors from the University of North Carolina at Chapel Hill, where he was editor-in-chief of the Law Review. Mr. Gray served in the United States Marine Corps, and after law school, he clerked for Earl Warren, Chief Justice of the United States Supreme Court.
Partner, Baker & Hostetler LLP
Lee A. Casey focuses on federal environmental, constitutional and international law and Alien Tort Statute issues. He also advises clients on compliance issues under the Foreign Corrupt Practices Act (FCPA), U.S. trade sanctions regimes, and federal ethics requirements. Mr. Casey’s practice includes federal, district and appellate court litigation, as well as matters before federal agencies. Prior to joining BakerHostetler, Mr. Casey was an associate with Hunton & Williams, practicing in international, environmental and constitutional law. From 2004 through 2007 he served as an member of the United Nations Subcommission on the Promotion and Protection of Human Rights.
From 1986 to 1993, Mr. Casey served in various capacities in the federal government, including the Office of Legal Policy (1986-90) and the Office of Legal Counsel (1992-93) at the U.S. Department of Justice and served as Deputy Associate General Counsel at the U.S. Department of Energy (1990-92). The Office of Legal Counsel is responsible for advising the Attorney General and the White House on issues of constitutional law and statutory interpretation. The Office of Legal Policy served as a strategic “think tank” for the Reagan Justice Department and was responsible for reviewing candidates for appointments to the federal bench.
Before joining the government in 1986, Mr. Casey was an associate in the Los Angeles firm of Mitchell, Silberberg & Knupp, practicing in the litigation section, with an emphasis on copyright, contract and First Amendment issues. From 1984 to 1985, Mr. Casey served as Law Clerk to the Honorable Alex Kozinski, then Chief Judge of the United States Claims Court. From 1982 to 1984, he practiced at the Detroit firm of Dykema Gossett, focusing on corporate, securities, commercial and intellectual property litigation, and from 1990 through 1994, he served as an Adjunct Professor of Law at George Mason University School of Law in Arlington, Virginia.
Among the chapters, articles and papers that Mr. Casey has authored or co-authored are: “International Law and the Nation-State at the U.N.,” Reclaiming the Language of Freedom at the United Nations: A Guide for U.S. Policymakers, The Heritage Foundation (2006) (with David B. Rivkin, Jr.); “The Dangerous Myth of Universal Jurisdiction,” A Country I Do Not Recognize (ed. Robert H. Bork) (2005) (with David B. Rivkin, Jr.); “Leashing the Dogs of War,” The National Interest (Fall 2003) (with David B. Rivkin, Jr.); “The Limits of Legitimacy: The Rome Statute’s Unlawful Application to Non-State Parties,” 44 Va.J.Int’l L. 63 (Fall 2003) (with David B. Rivkin, Jr.); “Devil’s Advocates: The Danger of Judging Lawyers By Their Clients,” Policy Review (Feb. and Mar. 2002) (with David B. Rivkin, Jr.); “The Case Against the International Criminal Court,” 25 Fordham Int’l L.J. 840 (2002); “Europe in the Balance: The Alarmingly Undemocratic Drift of the European Union,” Policy Review (June and July 2001) (with David B. Rivkin Jr.); “Against an International Criminal Court,” Commentary, May 1998 (with David B. Rivkin, Jr.); “Federalism (Cont’d.),” Commentary, December 1996 (with David B. Rivkin, Jr.); “Presidents and War Powers: Another View,” Common Sense, Winter 1996 (with David B. Rivkin, Jr.); “How Binding Are Contracts?” The American Enterprise, Nov./Dec. 1993 (with David B. Rivkin, Jr.); and “Pirate Constitutionalism: An Essay in Self-Government,” 8 J. of L. & Politics 477 (1992).
Mr. Casey is a member of the California, Michigan and District of Columbia Bar Associations.
Partner, Baker & Hostetler LLP
Mark DeLaquil is a first-chair trial and appellate advocate who focuses on complex environmental and regulatory proceedings, First Amendment practice and political law.
Mark has been recognized by Chambers USA for environmental litigation (2015 to 2024) and has been named by Law360 as one of the "Top 5 Environmental Attorneys Under the Age of 40" on two occasions.
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.
Professor of Law, George Mason University School of Law
With his work in regulatory takings and other aspects of property law, professor of law Steven Eagle plays an important role in the ongoing dialogue among American legal scholars, lawyers, and judges on the proper interpretation of property rights in the Constitution. He is the author of a leading property treatise and scholarly and popular articles and teaches in programs for judges and the practicing bar.
Professor Eagle came to George Mason in 1987 and also has taught at the law schools of Vanderbilt University, the University of Toledo, and Pace University. He earned his B.B.A. from the City College of New York (1965) and his J.D. from Yale Law School (1970). Professor Eagle teaches the first-year course, Property, Land Use Planning, and an advanced constitutional law seminar on property rights.
Senior Attorney, Pacific Legal Foundation
Reed Hopper is a Senior Attorney in PLF’s Environmental Law Practice Group. He oversees the Foundation’s Endangered Species Act Program that is designed to ensure that species protections are balanced with individual rights, the rule of law, and other social values. Reed also oversees PLF’s Clean Water Act Project that targets illegal federal regulation of local land and water use.
Reed has always had a strong patriotic spirit and a desire to serve his country. Before joining PLF in 1987, Reed served as an Environmental Protection Officer and Hearing Officer in the U.S. Coast Guard where he gained a love for the law. He also loves our constitutional way of life and cannot tolerate injustice. PLF affords him the opportunity to rectify unjust actions perpetrated by overreaching government. He enjoys getting up each morning to fight for a just cause.
Reed has litigated and won precedent-setting environmental and land use cases at all levels of the state and federal courts, including the U.S. Supreme Court. He has published numerous articles and testified before Congress as an expert witness.
Reed graduated from the University of California, Davis, with a Bachelors Degree in German and major work in biochemistry. He also did graduate business studies at California State University and Tulane University and earned his Juris Doctor Degree from the University of the Pacific, McGeorge School of Law.
Professor of Law Emeritus; Senior Fellow for Climate Policy, Environmental Law Center, Vermont Law School
Patrick A. Parenteau is Emeritus Professor of Law and Senior Fellow for Climate Policy in the Environmental Law Center at Vermont Law School. He previously served as Director of the Environmental Law Center and was the founding director of the EAC (formerly the Environmental and Natural Resources Law Clinic) in 2004.
Professor Parenteau has an extensive background in environmental and natural resources law. His previous positions include Vice President for Conservation with the National Wildlife Federation in Washington, DC (1976-1984); Regional Counsel to the New England Regional Office of the EPA in Boston (1984-1987); Commissioner of the Vermont Department of Environmental Conservation (1987-1989); and Senior Counsel with the Perkins Coie law firm in Portland, Oregon (1989-1993).
Professor Parenteau has been involved in drafting, litigating, implementing, teaching, and writing about environmental law and policy for over three decades. His current focus is on confronting the profound challenges of climate change through his teaching, publishing, public speaking and litigation.
Professor Parenteau is a Fulbright US Scholar and a Fellow in the American College of Environmental Lawyers. In 2005 he received the National Wildlife Federation’s Conservation Achievement Award in recognition of his contributions to wildlife conservation and environmental education. In 2016 he received the Kerry Rydberg Award for excellence in public interest environmental law.
Professor Parenteau holds a B.S. from Regis University, a J.D. from Creighton University, and an LLM in Environmental Law from the George Washington U.
Robert F. Stanton Professor of Law, University of Maryland Carey School of Law
Robert V. Percival is the Robert F. Stanton Professor of Law and the Director of the Environmental Law Program at the University of Maryland School of Law. He received a B.A. summa cum laude from Macalester College, a J.D. from Stanford Law School and an M.A. in economics from Stanford University. At Stanford Percival was named the Nathan Abbott Scholar for graduating first in his law school class. Following graduation, he served as a law clerk for Judge Shirley M. Hufstedler of the U.S. Court of Appeals for the Ninth Circuit and for U.S. Supreme Court Justice Byron R. White. He joined the Maryland faculty in 1987 after serving as a senior attorney for the Environmental Defense Fund. Percival has served as a visiting professor of law at Harvard Law School, Georgetown University Law Center, the China University of Political Science and Law (Beijing), and Comenius University (Bratislava). He is the principal author of a leading environmental law casebook, now in its 9th edition, and the author of several articles about the Supreme Court and presidential authority over executive agencies. Percival wrote one of the first articles on the propriety of consent decrees to effectuate and enforce federal law “The Bounds of Consent: Consent Decrees, Settlements and Federal Environmental Policymaking,” 1987 Univ. Chic. Leg. F. 327 (1987). He also is the author of the first comprehensive analyses of what the papers of the late Justices Thurgood Marshall and Harry Blackmun reveal about the Supreme Court’s handling of environmental cases (“Environmental Law in the Supreme Court: Highlights from the Blackmun Papers,” 35 ELR 10637 (2005), and “Environmental Law in the Supreme Court: Highlights from the Marshall Papers,” 13 ELR 10606 (Oct. 1993)).
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