Harlan Fiske Stone Professor of Constitutional Law, Columbia Law School
A leading administrative and constitutional law scholar, Gillian Metzger ’96 writes and teaches in the areas of administrative law, constitutional law, and federal courts, with an emphasis on federalism and privatization. In 2023-2024, she served as Acting Assistant Attorney General and Deputy Assistant Attorney General in the Office of Legal Counsel in the Department of Justice.
Metzger's recent work covers topics ranging from constitutional attacks on the administrative state to appropriations, administrative law under the Roberts Court, and the role of administrative agencies in a polarized world. In 2015, Metzger won the American Bar Association Administrative Law Section Annual Scholarship Award for “The Constitutional Duty to Supervise,” which examined presidential control and oversight of the modern administrative state. She is a co-editor of Gellhorn & Byse’s Administrative Law: Cases and Comments, 13th ed. (Foundation Press, 2023), a seminal administrative law casebook.
Professor Metzger was recently elected to the American Academy of Arts & Sciences and is a Senior Fellow of the Administrative Conference of the United States. In 2020, she was awarded Columbia University's Faculty Mentorship Award and in 2014, the Law School’s graduating class awarded Metzger the Willis L.M. Reese Prize for Excellence in Teaching, recognizing, among many other accomplishments, her commitment to mentoring new generations of law students.
In 2012, Metzger helped launch Columbia Law School’s Center for Constitutional Governance (CCG)—where she now serves as faculty director—a nonpartisan legal and policy organization devoted to the study of constitutional structure and authority. CCG brings together a diverse group of constitutional scholars to explore policy areas such as health care, civil rights, immigration, financial regulation, and national security.
Metzger also has co-authored and filed numerous amicus briefs in major constitutional and administrative law challenges before the Supreme Court and other courts. Most recently, Metzger filed a brief in Seila Law Center v. CFPB, a separation of powers challenge, and in Kisor v. Wilkie, a case involving judicial deference to agencies. She has also filed briefs in cases involving reproductive rights and the Affordable Care Act, among others.
Previously, Metzger served as vice dean of intellectual life at Columbia Law School. Before joining the Law School, she worked as an attorney with the Brennan Center for Justice. Metzger also clerked for U.S. Supreme Court Justice Ruth Bader Ginsburg ’59 and Judge Patricia M. Wald of the U.S. Circuit Court of Appeals for the District of Columbia. In 2018, Metzger moderated a panel discussion with Justice Ginsburg on impact litigation at Columbia Law School.
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.
Senior US District Judge, US District Court for the Southern District of New York
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.
Patrick Hotung Professor of Constitutional Law, Georgetown University Law Center
Randy Barnett is the Patrick Hotung Professor of Constitutional Law at Georgetown University Law Center. He has argued before the United States Supreme Court, tried murder cases to juries as a prosecutor in Chicago, and appeared as a prosecutor in the feature film Inalienable. He is the author of numerous books, including Restoring the Lost Constitution, The Structure of Liberty, Our Republican Constitution, and The Original Meaning of the Fourteenth Amendment. He has published two memoirs, A Life for Liberty: The Making of an American Originalist, and Felony Review: Tales of True Crime and Corruption in Chicago. He is currently working on a new book, Freedom and Flourishing: Libertarianism for the Real World.
Is Government Health Care Constitutional?
New York City Lawyers Chapter
New York, NYThe Supreme Court and the 2008 Election
Wichita, KansasConstitutional Clichés: Does Trite Make Right?
Why Government Is Bad For Ducks
John Povejsil
Environmental policy invariably seems to be created in a melodramatic world of good-guy government officials...