Senior Counsel, Caplin & Drysdale; Adjunct Professor of Law, Georgetown Law
Professor Carney is a Senior Counsel with Caplin & Drysdale, Cht’d. in Washington, D.C. He served as a Trial Attorney for the Tax Division of the U.S. Department of Justice for six years, and was in private (law firm) tax practice for many years, specializing in IRS administrative practice, tax controversies (audit and IRS Appeals Office), and tax litigation. He also advised clients in a similar capacity as a partner in the National Tax Office of Ernst & Young LLP in Washington. He is a member of the District of Columbia bar, as well as the bars of the U.S. Tax Court, U.S. Court of Federal Claims, U.S. District Court for the District of Columbia, and the U.S. Courts of Appeals for the Federal Circuit, D.C Circuit, and Eleventh Circuit.
Associate Dean for Research and Intellectual Life, McKnight Presidential Professor in Law, Distinguished McKnight University Professor, Harlan Albert Rogers Professor in Law, Associate Director, Corporate Institute, University of Minnesota Law School
Professor Kristin E. Hickman is the McKnight Presidential Professor in Law, a Distinguished McKnight University Professor, and Harlan Albert Rogers Professor in Law at the University of Minnesota Law School. She also has taught at Harvard Law School and Northwestern University School of Law. Professor Hickman teaches and writes primarily in the areas of administrative law, tax administration, and statutory interpretation. Her articles on these topics have appeared in the Columbia Law Review, Cornell Law Review, Virginia Law Review, Duke Law Journal, and other publications. She also co-authors the Administrative Law Treatise with Richard J. Pierce, Jr., and a casebook on federal administrative law with Pierce and Christopher J. Walker. Her scholarly work has been cited several times in opinions of the United States Supreme Court as well as regularly in lower court judicial opinions and court briefs.
In 2018-19, Professor Hickman served as Special Adviser to the Administrator of the Office of Information and Regulatory Affairs in Washington, D.C. She presently serves as a Senior Fellow, and previously served as a public member and chair of the judicial review committee, for the Administrative Conference of the United States. She also is a Fellow of the American College of Tax Counsel.
Professor Hickman received her B.S. degree in business administration with a concentration in accounting and a secondary major in history from Trinity University in San Antonio, Texas. After practicing for several years as a certified public accountant, Professor Hickman earned her J.D. degree, magna cum laude, from Northwestern University School of Law, where she was awarded the Raoul Berger Prize and the Lowden Wigmore Prize for her scholarly writings. Following law school, Professor Hickman clerked for The Honorable David B. Sentelle of the United States Court of Appeals for the District of Columbia Circuit and practiced law as an associate with the Chicago office of Skadden, Arps, Slate, Meagher & Flom, concentrating on corporate and international tax transactions and matters.
Founder, Law Office of Eileen J. O'Connor PLLC
After nearly 30 years as a national tax specialist with the IRS and major accounting firms, Eileen J. O’Connor, now an attorney in private practice, was Assistant Attorney General for the Justice Department’s Tax Division for six years during the administration of President George W. Bush and a member of then-President-elect Trump’s Treasury Department Transition Team. She focuses on federal administrative and tax law.
Adjunct Professor of Law, American University's Washington College of Law and the University of Pennsylvania's Carey Law School
Mr. Rothenberg earned his B.A. (in Economics) from the University of Pennsylvania (1971), his J.D. from American University’s Washington College of Law (1975), and his LL.M. (in Taxation) from Georgetown University Law Center (1979). Mr. Rothenberg worked in the Justice Department’s Tax Division for his entire career, starting out as a line attorney in the Division’s Appellate Section (where he handled, among many others, the landmark Tufts and Diedrich cases, and more recently argued the Murphy and Cohen cases before the D.C. Circuit, the latter en banc). For the last 15 years of his tenure, until he retired in November 2019, Mr. Rothenberg was Chief of the Tax Division’s Appellate Section, overseeing a staff of approximately 50 attorneys and support personnel. Mr. Rothenberg is also an Adjunct Professor of Law at the American University’s Washington College of Law, where for more than 30 years he has taught courses in individual, corporate, and partnership income tax. His publications include an article on tax deficiency procedures in The Virginia Tax Review, later reprinted in abbreviated form in The Monthly Digest of Tax Articles, and a chapter in the ABA’s 2009 publication entitled Careers in Tax Law. He was profiled in the Winter 2010 issue of the ABA’s Section of Taxation NewsQuarterly, and he is also a frequent speaker/panel member at federal tax conferences.
Of Counsel, Spencer Fane LLP
Anthony J. “A.J.” Ferate has built a multi-faceted background in the areas of the law, policy, energy, campaigns and elections, and defense over the last 20 years.
Through recent representation as Vice President of Regulatory Affairs for the Oklahoma Independent Petroleum Association (“OIPA”), A.J. held responsibilities over government efforts outside of the legislative branch on matters as broad as water, electric generation, commodity marketing, land matters, and seismicity. A.J. also maintained responsibility for legal matters at OIPA, including amicus briefing in appellate matters. A.J.’s extensive experience also includes management of public policy strategy for a Fortune 500 company.
For the past eleven years, A.J. has volunteered as General Counsel and spokesman for the Oklahoma Republican Party and has represented a number of elected officials, including U.S. Senator James Lankford, former statewide elected officials, a number of state legislators, and members of Congress.
Additionally, A.J. has assisted elected officials serve their constituents in all branches of government. Early in his career, A.J. held legislative aide duties in the Nebraska Legislature, then went on to work for former Nebraska Treasurer David Heineman. A.J. gained experience in the judiciary while serving Judge Gary L. Lumpkin at the Oklahoma Court of Criminal Appeals, the highest criminal appellate court in Oklahoma. Following this service, A.J. began work with Denise A. Bode of the Oklahoma Corporation Commission, assisting her in her duties regulating 70 percent of Oklahoma’s economy, including oil and gas and electric utilities.
A.J. honorably served ten years as an intelligence analyst for the United States Naval Reserve, including time at the Office of Naval Intelligence in the greater Washington DC area.
Opinion pieces authored or ghostwritten by A.J. have been published in the Seattle Times, Politico, Law360, The Oklahoman, Tulsa World and The Journal Record. A.J. has also been interviewed by national and international newspapers, and has also appeared on national radio programs including NPR’s The Diane Rehm Show and On Point with Tom Ashbrook.
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).
Of Counsel, Spencer Fane LLP
Anthony J. “A.J.” Ferate has built a multi-faceted background in the areas of the law, policy, energy, campaigns and elections, and defense over the last 20 years.
Through recent representation as Vice President of Regulatory Affairs for the Oklahoma Independent Petroleum Association (“OIPA”), A.J. held responsibilities over government efforts outside of the legislative branch on matters as broad as water, electric generation, commodity marketing, land matters, and seismicity. A.J. also maintained responsibility for legal matters at OIPA, including amicus briefing in appellate matters. A.J.’s extensive experience also includes management of public policy strategy for a Fortune 500 company.
For the past eleven years, A.J. has volunteered as General Counsel and spokesman for the Oklahoma Republican Party and has represented a number of elected officials, including U.S. Senator James Lankford, former statewide elected officials, a number of state legislators, and members of Congress.
Additionally, A.J. has assisted elected officials serve their constituents in all branches of government. Early in his career, A.J. held legislative aide duties in the Nebraska Legislature, then went on to work for former Nebraska Treasurer David Heineman. A.J. gained experience in the judiciary while serving Judge Gary L. Lumpkin at the Oklahoma Court of Criminal Appeals, the highest criminal appellate court in Oklahoma. Following this service, A.J. began work with Denise A. Bode of the Oklahoma Corporation Commission, assisting her in her duties regulating 70 percent of Oklahoma’s economy, including oil and gas and electric utilities.
A.J. honorably served ten years as an intelligence analyst for the United States Naval Reserve, including time at the Office of Naval Intelligence in the greater Washington DC area.
Opinion pieces authored or ghostwritten by A.J. have been published in the Seattle Times, Politico, Law360, The Oklahoman, Tulsa World and The Journal Record. A.J. has also been interviewed by national and international newspapers, and has also appeared on national radio programs including NPR’s The Diane Rehm Show and On Point with Tom Ashbrook.
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).
Senior Fellow, Ave Maria School of Law and Host of the Four Boxes Diner Second Amendment Channel
Mark W. Smith is Visiting Fellow in Pharmaceutical Public Policy and Law in the Department of Pharmacology at the University of Oxford; Presidential Scholar and a Senior Fellow in Law and Public Policy at The King’s College; and Distinguished Scholar and Senior Fellow of Law and Public Policy at the Ave Maria School of Law.
He is a constitutional attorney and Host of the Four Boxes Diner YouTube channel—which provides scholarly and historical analyses of the Second Amendment. Mark is also a New York Times bestselling author.
Senior Fellow, Ave Maria School of Law and Host of the Four Boxes Diner Second Amendment Channel
Mark W. Smith is Visiting Fellow in Pharmaceutical Public Policy and Law in the Department of Pharmacology at the University of Oxford; Presidential Scholar and a Senior Fellow in Law and Public Policy at The King’s College; and Distinguished Scholar and Senior Fellow of Law and Public Policy at the Ave Maria School of Law.
He is a constitutional attorney and Host of the Four Boxes Diner YouTube channel—which provides scholarly and historical analyses of the Second Amendment. Mark is also a New York Times bestselling author.
Partner, Boyden Gray PLLC
Michael Buschbacher is a partner at Boyden Gray PLLC. He represents public and private companies, trade associations, non-profits, and individuals in high-stakes litigation and administrative proceedings, with a particular focus on environmental and energy matters.
In addition to trial-level work, Mr. Buschbacher maintains an active appellate practice, both as merits counsel and as counsel for amici curiae. He has written amicus briefs quoted by the Seventh and Ninth Circuits. And his Supreme Court advocacy has been cited by The New Yorker, The New York Times, and E&E News. Mr. Buschbacher’s commentary on legal issues has been published in The Wall Street Journal, Newsweek, and The American Conservative.
Before joining the firm, Mr. Buschbacher served at the U.S. Department of Justice as counsel to the Assistant Attorney General for the Environment and Natural Resources Division. There, he advised senior Department leadership, served as the lead attorney on several lawsuits, and helped draft policy memoranda for the Department on the proper scope and procedure for environmental enforcement. Prior to serving in the government, Mr. Buschbacher was an associate in the D.C. office of Sidley Austin.
Mr. Buschbacher is a former clerk to Judge Alice M. Batchelder of the U.S. Court of Appeals for the Sixth Circuit and to Magistrate Judge Paul R. Cherry of the U.S. District Court for the Northern District of Indiana.
Mr. Buschbacher holds a B.A. in Music and Germanic Studies from Indiana University and a J.D., magna cum laude, from Notre Dame Law School.
Partner, Sidley Austin LLP
JUSTIN SAVAGE is a global co-leader of the firm’s Environmental, Health, and Safety practice and co-leads the Automotive and Mobility sector team, where he is a leading strategist for companies navigating the intersection of complex regulation, high-stakes litigation, and transformative industry change. For nearly three decades, he has led clients through their most consequential environmental, health, and safety (EH&S) disputes and mobility-sector challenges, earning a reputation as both a trusted counselor and a forceful advocate in the courtroom and the boardroom. A core part of Justin’s practice also focuses on regulatory strategy and market entry, advising emerging technology companies, new market entrants, and established industry leaders on launching new products, technologies, and business models. He regularly counsel clients in emerging fields such as robotics and AI on engaging with regulators, anticipating enforcement and compliance risk, and building defensible regulatory strategies that support growth rather than slow it.
Clients praise Justin as “an excellent litigator… strategically clever and creative… attentive, thoughtful and willing to go above and beyond” (Chambers USA 2025). Chambers USA has ranked him for Band 1 for Environment in District of Columbia (2017–2025) and Band 3 for Transportation: Road (Automotive) in USA—Nationwide (2023–2025).
Justin has won some of the most closely watched EH&S and transportation disputes of the past two decades and guided companies through crises where business continuity, brand reputation, and regulatory survival were on the line. His leadership has been repeatedly recognized: he is a three-time Law360 Environmental “MVP” (2018, 2024, 2025) and a Lawdragon “500 Global Leaders in Crisis Management” (2025-2026). He is the first call for companies facing bet-the-company challenges.
Justin’s clients concentrate in heavily regulated industries, including auto and mobility, aviation, chemicals, data centers, energy, mining, and refining. Justin litigates and counsels across the spectrum of U.S. environmental, transportation, and administrative laws, including the Clean Air Act (Title I, mobile sources, and fuels), incident response, RMP, NHTSA, Clean Water Act, TSCA, CSB investigations, APA claims, FOIA litigation, NEPA, and the Safe Drinking Water Act.
Prior to joining Sidley, Justin served for nearly a decade at the Environmental Enforcement Section of the U.S. Department of Justice, where he led teams in several multi-billion dollar enforcement cases. In his career, Justin has regularly taught on a range of environmental and litigation topics. For several years, Justin served as an instructor at the Justice Department’s National Advocacy Center where he taught hundreds of Assistant U.S. Attorneys and other agency lawyers on topics that included trial advocacy and evidence. Since rejoining private practice, Justin has served eight times as a faculty member for the American Law Institute’s Environmental Litigation program. He also lectured on a range of litigation and trial topics for bar associations and organizations, including serving as an instructor for the FAA on trial advocacy.
Partner, Luther Strange & Associates
Annie Donaldson Talley is Partner at Luther Strange and Associates. She recently departed the White House after serving as Deputy Assistant to the President and Deputy Counsel to the President. Over the past four years, she provided outside counsel to the Donald J. Trump for President campaign; helped stand up and manage the White House Counsel’s Office; interfaced with agencies across the federal government; and advised the President of the United States, White House Counsel, Chief of Staff and other senior staff across the Executive Office of the President on a broad range of issues from regulatory reform to executive nominations to the day-to-day issues facing the Administration.
Prior to her White House service, Annie Donaldson Talley counseled clients in the non-profit, for-profit, political, and government sectors, as well as high-profile individuals in private practice at Jones Day and Patton Boggs. She provided strategic counseling to clients structuring their affairs to ensure compliance with a web of state and federal laws and represented clients in complex, multi-faceted investigations, leading teams navigating issues of intense public scrutiny.
Annie Donaldson Talley is also a veteran of three presidential campaigns and served in state government. She holds a B.A., summa cum laude, from the University of Alabama and a J.D. from Harvard Law School, where she served on the Harvard Law Review. She lives in Montgomery, Alabama with her husband, Brett.
Are IRS Defenses Crumbling?
Robert T. Carney, Kristin E. Hickman, Eileen J. O'Connor, Gilbert Rothenberg
The continuous stream of regulations and other guidance the Internal Revenue Service (IRS) must publish...
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Anthony J. Ferate, Jennifer H. Weddle
On June 13 and 15, 2022, the Supreme Court decided Denezpi v. United States and...
Courthouse Steps Decisions: Denezpi and Ysleta
Anthony J. Ferate, Jennifer H. Weddle
On June 13 and 15, 2022, the Supreme Court decided Denezpi v. United States and...
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Flight Attendant Triumphs Over Union and Southwest Airlines in Suit Challenging Illegal Firing; Jury Awards Her $5.1 Million in Damages
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Perlot v. Green: Free Expression in Law School
One of the most contested arenas for free expression today continues to be . . ....
Courthouse Steps Decision: New York State Rifle & Pistol Association Inc. v. Bruen
Mark W. Smith
On June 23, 2022, the Supreme Court decided New York State Rifle & Pistol Association...
Courthouse Steps Decision: New York State Rifle & Pistol Association Inc. v. Bruen
Mark W. Smith
On June 23, 2022, the Supreme Court decided New York State Rifle & Pistol Association...
Deep Dive Episode 222 – The Return of Supplemental Environmental Projects
Michael Buschbacher, Justin Savage, Annie Donaldson Talley
Regulatory Transparency Project's Fourth Branch Podcast
On May 5, the United States Department of Justice (DOJ) announced a new "Comprehensive Environmental...
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Federal Judiciary’s Standing Committee Approves Changes to Federal Rules of Evidence, Including Rule 702 Governing Expert Testimony
On June 7, the Judicial Conference Committee on Rules of Practice and Procedure (Standing Committee)...
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Washington Supreme Court Reaffirms Learned Intermediary Doctrine with No Exception for Direct-to-Consumer Advertising
On June 2, the Washington Supreme Court in Dearinger v. Eli Lilly & Co. reaffirmed...