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.
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.
Associate, Covington & Burling LLP
Eli Nachmany is an associate at Covington & Burling LLP in the Washington, DC, office. He clerked for Judge Steven J. Menashi of the U.S. Court of Appeals for the Second Circuit. Eli graduated magna cum laude from Harvard Law School, where he was Editor-in-Chief of the Harvard Journal of Law & Public Policy. Prior to law school, Eli served as the speechwriter to the U.S. Secretary of the Interior and as a domestic policy aide in the White House Office of American Innovation. He graduated summa cum laude from New York University with a B.S. in Sports Management. Eli’s scholarship on administrative law and executive power has appeared in the BYU Law Review, George Mason Law Review, Wake Forest Law Review, and Yale Law Journal Forum.
Lyle T. Alverson Professor of Law, George Washington University Law School
Professor Pierce is author of over twenty books and 130 articles on administrative law, government regulation, and the effects of various forms of government intervention on the performance of markets. His books and articles have been cited in hundreds of judicial opinions, including over a dozen opinions of the U.S. Supreme Court.
Professor of Law, University of Michigan Law School
Professor Nicholas Bagley teaches and writes in the areas of administrative law, regulatory theory, and health law. Prior to joining the Law School faculty, he was an attorney with the appellate staff in the Civil Division at the U.S. Department of Justice, where he argued a dozen cases before the U.S. Courts of Appeals and acted as lead counsel in many more. Professor Bagley also served as a law clerk to Justice John Paul Stevens of the U.S. Supreme Court and to the Hon. David S. Tatel of the U.S. Court of Appeals, District of Columbia Circuit. Professor Bagley holds a BA in English from Yale University and received his JD, summa cum laude, from New York University School of Law. Before entering law school, he joined Teach For America and taught eighth-grade English at a public school in South Bronx. Professor Bagley's work has appeared in the Harvard Law Review, the Columbia Law Review, the Georgetown Law Journal, the New England Journal of Medicine, and the Journal of Health Politics, Policy, and Law. In 2012, he was the recipient of the Law School's L. Hart Wright Award for Excellence in Teaching. He is a frequent contributor to The Incidental Economist, a prominent health policy blog.
Professor of Law, University of Notre Dame Law School
Emily Bremer teaches and writes in the areas of administrative law, regulatory process, and civil procedure. Her scholarship focuses primarily on matters of procedural design, with a recent focus on the history and interpretation of the Administrative Procedure Act (APA). She is a recipient of the AALS’s award for the year’s best administrative law scholarship by a junior scholar and the AALL’s Joseph L. Andrew’s Legal Literature Award for her contribution to the Bremer-Kovacs Collection of Historical Documents Related to the APA (HeinOnline). Bremer’s articles include a defense forthcoming in the Virginia Law Review of the constitutionality of the APA’s regime for ensuring the competence and impartiality of Administrative Law Judges; a plea in the Yale Journal on Regulation for administrative law to take greater account of the on-the-ground reality of administration; twin articles uncovering the intellectual foundation and meaning of the APA’s adjudication and rulemaking provisions; and three separate studies that served as the basis of recommendations of the Administrative Conference of the United States (ACUS) on the subjects of agency declaratory orders, incorporation by reference, and statutory limitations on the jurisdiction of the Court of Federal Claims. Bremer serves as a Senior Fellow of ACUS, a co-editor of the administrative law section of Jotwell, and a regular contributor to the Yale Journal on Regulation’s Notice & Comment blog.
Professor of Law, University of Chicago Law School
Jennifer Nou is Professor of Law at the University of Chicago Law School. Nou’s main research interests are in administrative law, executive branch dynamics, regulatory policy, and constitutional separation-of-powers. Prior to joining the faculty, she was a Public Law Fellow at the Law School and also worked as a policy analyst and special assistant at the Office of Information and Regulatory Affairs. Nou is a graduate of Yale College and Yale Law School, and received an MPhil in Politics from Oxford University as a Marshall Scholar. After law school, she was a law clerk to Judge Richard Posner of the US Court of Appeals for the Seventh Circuit and then to Justice Stephen Breyer of the US Supreme Court. She is currently a public member of the Administrative Conference of the United States.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Rao was appointed to the United States Court of Appeals for the District of Columbia Circuit in March 2019. She graduated from Yale College in 1995 and the University of Chicago Law School in 1999. Following graduation, she served as a law clerk to Judge J. Harvie Wilkinson III of the U.S. Court of Appeals for the Fourth Circuit and, in the 2001 October Term, as law clerk to Justice Clarence Thomas of the U.S. Supreme Court. Between her clerkships, Judge Rao served as counsel for nominations and constitutional law to the U.S. Senate Committee on the Judiciary. In 2002, she joined the international arbitration group of Clifford Chance LLP in London, England. From 2005-2006, she served as Special Assistant and Associate White House Counsel to President George W. Bush. From 2006 to 2017, Judge Rao was a professor at the Antonin Scalia Law School at George Mason University, where she taught constitutional law, legislation and statutory interpretation, and the history and foundations of the administrative state. In 2014, she founded the Center for the Study of the Administrative State, a non-profit Center that promotes academic scholarship and public policy debates about administrative law. In July 2017, she was appointed to serve as the Administrator of the Office of Information and Regulatory Affairs in the Office of Management Budget. She served in this position until her appointment to the D.C. Circuit.
Of Counsel, Covington & Burling LLP
The Honorable Paul J. Ray is currently Of Counsel at Covington & Burling LLP where he advises clients on regulatory opportunities and challenges and helps them formulate and execute advocacy strategies for their regulatory policy priorities before the executive branch and Congress.
During the first Trump Administration, Paul held various senior positions at the Office of Information and Regulatory Affairs (OIRA) within the White House’s Office of Management and Budget, including as acting, and then Senate-confirmed, head of the office. As OIRA Administrator (the "regulations czar"), Paul supervised the review of hundreds of regulations from across the government, drafted numerous executive orders governing the regulatory process, and led the Administration’s regulatory reform effort. As a result of this experience, Paul is well-positioned to help clients understand and achieve regulatory policy priorities in the context of the government’s regulatory agenda and ongoing reform efforts.
Most recently, Paul was also the Director of the Roe Institute for Economic Policy Studies at The Heritage Foundation. In that role, he supervised the formulation of the Foundation’s economic and regulatory policy recommendations and provided technical assistance to congressional committees and staff regarding legislative changes to the regulatory process. In addition to his role at The Heritage Foundation, Paul also served as a Senior Advisor at a strategic advisory firm. Before his time in government, Paul practiced law at a law firm in Washington, specializing in administrative law matters.
Prior to his role at the White House, Paul was Counselor to the Secretary at the U.S. Department of Labor. There he led departmental efforts in high-profile rulemakings and helped formulate the Department’s legal positions and strategy.
Paul served as a law clerk to Supreme Court Justice Samuel Alito and as a law clerk to the Honorable Debra Livingston of the U.S. Court of Appeals for the Second Circuit.
Paul is a thought leader in the conservative legal movement and is a frequent commentator and speaker on regulatory policy and reform matters, including at law schools, professional gatherings, and other venues. He is the Chairman of Innovations in Peacebuilding International and the Regulatory Process Working Group of the Federalist Society’s Regulatory Transparency Project and a public member of the Administrative Conference of the United States. Paul is also an adjunct lecturer at the Hillsdale College School of Government.
Professor of Law, University of Michigan Law School
Professor Nicholas Bagley teaches and writes in the areas of administrative law, regulatory theory, and health law. Prior to joining the Law School faculty, he was an attorney with the appellate staff in the Civil Division at the U.S. Department of Justice, where he argued a dozen cases before the U.S. Courts of Appeals and acted as lead counsel in many more. Professor Bagley also served as a law clerk to Justice John Paul Stevens of the U.S. Supreme Court and to the Hon. David S. Tatel of the U.S. Court of Appeals, District of Columbia Circuit. Professor Bagley holds a BA in English from Yale University and received his JD, summa cum laude, from New York University School of Law. Before entering law school, he joined Teach For America and taught eighth-grade English at a public school in South Bronx. Professor Bagley's work has appeared in the Harvard Law Review, the Columbia Law Review, the Georgetown Law Journal, the New England Journal of Medicine, and the Journal of Health Politics, Policy, and Law. In 2012, he was the recipient of the Law School's L. Hart Wright Award for Excellence in Teaching. He is a frequent contributor to The Incidental Economist, a prominent health policy blog.
Professor of Law, University of Notre Dame Law School
Emily Bremer teaches and writes in the areas of administrative law, regulatory process, and civil procedure. Her scholarship focuses primarily on matters of procedural design, with a recent focus on the history and interpretation of the Administrative Procedure Act (APA). She is a recipient of the AALS’s award for the year’s best administrative law scholarship by a junior scholar and the AALL’s Joseph L. Andrew’s Legal Literature Award for her contribution to the Bremer-Kovacs Collection of Historical Documents Related to the APA (HeinOnline). Bremer’s articles include a defense forthcoming in the Virginia Law Review of the constitutionality of the APA’s regime for ensuring the competence and impartiality of Administrative Law Judges; a plea in the Yale Journal on Regulation for administrative law to take greater account of the on-the-ground reality of administration; twin articles uncovering the intellectual foundation and meaning of the APA’s adjudication and rulemaking provisions; and three separate studies that served as the basis of recommendations of the Administrative Conference of the United States (ACUS) on the subjects of agency declaratory orders, incorporation by reference, and statutory limitations on the jurisdiction of the Court of Federal Claims. Bremer serves as a Senior Fellow of ACUS, a co-editor of the administrative law section of Jotwell, and a regular contributor to the Yale Journal on Regulation’s Notice & Comment blog.
Professor of Law, University of Chicago Law School
Jennifer Nou is Professor of Law at the University of Chicago Law School. Nou’s main research interests are in administrative law, executive branch dynamics, regulatory policy, and constitutional separation-of-powers. Prior to joining the faculty, she was a Public Law Fellow at the Law School and also worked as a policy analyst and special assistant at the Office of Information and Regulatory Affairs. Nou is a graduate of Yale College and Yale Law School, and received an MPhil in Politics from Oxford University as a Marshall Scholar. After law school, she was a law clerk to Judge Richard Posner of the US Court of Appeals for the Seventh Circuit and then to Justice Stephen Breyer of the US Supreme Court. She is currently a public member of the Administrative Conference of the United States.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Rao was appointed to the United States Court of Appeals for the District of Columbia Circuit in March 2019. She graduated from Yale College in 1995 and the University of Chicago Law School in 1999. Following graduation, she served as a law clerk to Judge J. Harvie Wilkinson III of the U.S. Court of Appeals for the Fourth Circuit and, in the 2001 October Term, as law clerk to Justice Clarence Thomas of the U.S. Supreme Court. Between her clerkships, Judge Rao served as counsel for nominations and constitutional law to the U.S. Senate Committee on the Judiciary. In 2002, she joined the international arbitration group of Clifford Chance LLP in London, England. From 2005-2006, she served as Special Assistant and Associate White House Counsel to President George W. Bush. From 2006 to 2017, Judge Rao was a professor at the Antonin Scalia Law School at George Mason University, where she taught constitutional law, legislation and statutory interpretation, and the history and foundations of the administrative state. In 2014, she founded the Center for the Study of the Administrative State, a non-profit Center that promotes academic scholarship and public policy debates about administrative law. In July 2017, she was appointed to serve as the Administrator of the Office of Information and Regulatory Affairs in the Office of Management Budget. She served in this position until her appointment to the D.C. Circuit.
Of Counsel, Covington & Burling LLP
The Honorable Paul J. Ray is currently Of Counsel at Covington & Burling LLP where he advises clients on regulatory opportunities and challenges and helps them formulate and execute advocacy strategies for their regulatory policy priorities before the executive branch and Congress.
During the first Trump Administration, Paul held various senior positions at the Office of Information and Regulatory Affairs (OIRA) within the White House’s Office of Management and Budget, including as acting, and then Senate-confirmed, head of the office. As OIRA Administrator (the "regulations czar"), Paul supervised the review of hundreds of regulations from across the government, drafted numerous executive orders governing the regulatory process, and led the Administration’s regulatory reform effort. As a result of this experience, Paul is well-positioned to help clients understand and achieve regulatory policy priorities in the context of the government’s regulatory agenda and ongoing reform efforts.
Most recently, Paul was also the Director of the Roe Institute for Economic Policy Studies at The Heritage Foundation. In that role, he supervised the formulation of the Foundation’s economic and regulatory policy recommendations and provided technical assistance to congressional committees and staff regarding legislative changes to the regulatory process. In addition to his role at The Heritage Foundation, Paul also served as a Senior Advisor at a strategic advisory firm. Before his time in government, Paul practiced law at a law firm in Washington, specializing in administrative law matters.
Prior to his role at the White House, Paul was Counselor to the Secretary at the U.S. Department of Labor. There he led departmental efforts in high-profile rulemakings and helped formulate the Department’s legal positions and strategy.
Paul served as a law clerk to Supreme Court Justice Samuel Alito and as a law clerk to the Honorable Debra Livingston of the U.S. Court of Appeals for the Second Circuit.
Paul is a thought leader in the conservative legal movement and is a frequent commentator and speaker on regulatory policy and reform matters, including at law schools, professional gatherings, and other venues. He is the Chairman of Innovations in Peacebuilding International and the Regulatory Process Working Group of the Federalist Society’s Regulatory Transparency Project and a public member of the Administrative Conference of the United States. Paul is also an adjunct lecturer at the Hillsdale College School of Government.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Joseph L. Sax Collegiate Professor of Law and Co-Director of the Environmental and Energy Law Program, University of Michigan Law School
Charles Evans Hughes Professor of Law, Columbia Law School
THOMAS W. MERRILL is the Charles Evans Hughes Professor of Law at Columbia Law School. He previously taught at Northwestern University School of Law and Yale Law School. He has undergraduate degrees from Grinnell College and Oxford University, where he studied as a Rhodes Scholar, and a law degree from the University of Chicago. He clerked on the D.C. Circuit (for Chief Judge David Bazelon) and the U.S. Supreme Court (for Justice Harry Blackmun). From 1987-1990 he served as Deputy Solicitor General, U.S. Department of Justice. Professor Merrill’s writings related to property include Property: Principles and Policies (Foundation Press Second Edition, 2012) (with Henry E. Smith); Property: The Oxford Introductions to U.S. Law (Oxford U. Press, 2010); Property: Takings (Foundation Press, 2002)(with David Dana); and numerous articles, including “The Economics of Public Use” (Cornell Law Review 1986); “The Landscape of Constitutional Property” (Virginia Law Review 2000); and “The Character of the Governmental Action” (Vermont Law Review 2012). He is a member of the American Academy of Arts and Sciences.
Charles I. Francis Professorship in Law, University of Texas at Austin School of Law
Professor Aaron Nielson lectures and writes in the areas of administrative law, civil procedure, and federal courts. Before joining the faculty, he served as Solicitor General of Texas and represented Texas before the U.S. Supreme Court and the Texas Supreme Court, as well as overseeing all appellate litigation for the State. Earlier in his career, he was a professor at Brigham Young University and an appellate and antitrust partner in the Washington, D.C. office of Kirkland & Ellis LLP. He also clerked for Justice Samuel A. Alito, Jr. of the U.S. Supreme Court, Judge Janice Rogers Brown of the U.S. Court of Appeals for the D.C. Circuit, and Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit.
As Solicitor General, Professor Nielson successfully defended against a First Amendment challenge Texas’s law requiring online pornographers to institute age verification. In 2020, the U.S. Supreme Court appointed him to defend the constitutionality of a federal agency. He currently serves as a Senior Fellow of the Administrative Conference of the United States after completing a six-year term as an appointed public member and chair of the Conference’s Administration & Management Committee.
Nielson’s research focuses on administrative law, federal litigation, and the separation of powers. He has published (or soon will publish) in the Harvard Law Review, Columbia Law Review, University of Chicago Law Review, University of Pennsylvania Law Review, Duke Law Journal, Georgetown Law Journal, Cornell Law Review, and Northwestern University Law Review, among others. Nielson has been recognized for teaching for teaching and scholarship and in 2021 received the Federalist Society’s Joseph Story Award, which recognizes a young academic for excellence in legal scholarship, a commitment to teaching, and a concern for students, and who has made a significant public impact in a manner that advances the rule of law in a free society. He is also an elected member of the American Law Institute.
Professor Nielson received his J.D. magna cum laude from Harvard Law School and an LL.M from the University of Cambridge, where he focused his studies on the institutions that regulate global competition and commerce. He received his undergraduate degree summa cum laude from the University of Pennsylvania, majoring in economics and political science.
Associate Professor, University of Notre Dame Law School
Jeffrey Pojanowski joined the faculty and community of Notre Dame Law School in 2010. He teaches and writes in the areas of administrative law, jurisprudence, and torts. At present, his scholarship focuses on the legal theory of administrative action, as well as the philosophy and intellectual history of legal reasoning.
Prof. Pojanowski earned his A.B. in Public Policy with highest honors from Princeton University and graduated magna cum laude from Harvard Law School in 2004, where he was Articles Co-Chair for the Harvard Law Review. After law school, he served as a law clerk to then-Judge John Roberts on the United States Court of Appeals for the D.C. Circuit and then to Justice Anthony Kennedy on the Supreme Court of the United States. He then practiced law with Latham & Watkins in Washington, D.C., where he specialized in appellate litigation and administrative-law matters.
Judge, United States Court of Appeals, Sixth Circuit
Judge Readler earned his undergraduate and law degrees from the University of Michigan. After graduating, he served as a law clerk to Judge Alan Norris of the United States Court of Appeals for the Sixth Circuit. Judge Readler then began practicing law in the Columbus office of the international law firm Jones Day, eventually spending ten years as a partner in the firm’s Issues and Appeals Practice Group. While at Jones Day, Judge Readler appeared in state and federal trial and appellate courts around the country, most frequently the Supreme Court of Ohio and the Sixth Circuit. Judge Readler also successfully argued before the United States Supreme Court in McQuiggin v. Perkins on behalf of an inmate claiming actual innocence. His other pro bono representations include representing capital defendants before the Tenth Circuit and the Supreme Court of Ohio, as well as representing defendants sentenced to life in prison before the Sixth Circuit. While at Jones Day, Judge Readler traveled to Nairobi with Lawyers Without Borders to train Kenyan lawyers in prosecuting domestic violence cases, and he was also a recipient of the American Marshall Memorial Fellowship awarded by the German Marshall Fund of the United States. Following his career in private practice, Judge Readler served as Acting Assistant Attorney General for the Civil Division of the United States Department of Justice from 2017 to 2019. In that role, Judge Readler led and supervised over 1,000 lawyers in the Department’s largest litigating division, briefing and arguing several cases on behalf of the United States in federal courts across the country, including high-profile cases significant to the Administration and the Department. In March 2019, Judge Readler was confirmed to serve as a Circuit Judge on the Sixth Circuit. He resides in Columbus.
Judge, U.S. Court of Appeals for the Third Circuit
Hon. Jennifer Mascott served as Associate Professor of Law and Director of the Separation of Powers Institute at The Catholic University of America’s Columbus School of Law before her appointment to the federal bench. On July 16, 2025, President Donald J. Trump nominated her to the U.S. Court of Appeals for the Third Circuit (Delaware), and she was confirmed on October 9, 2025.
Prior to her confirmation, Judge Mascott wrote extensively in administrative and constitutional law, statutory interpretation, and the separation of powers. Her scholarship—published in leading journals including the Stanford Law Review, Notre Dame Law Review, and Supreme Court Review—was cited by the U.S. Supreme Court and multiple federal courts. She also contributed Supreme Court commentary for NBC Universal.
Before joining Catholic Law, she was an Assistant Professor and Co-Director of The C. Boyden Gray Center at George Mason University’s Antonin Scalia Law School. In 2022 she became co-author of Beermann, Cass & Diver’s Administrative Law: Cases and Materials (9th ed.). In 2023 she received the Justice Joseph Story Award for excellence in scholarship, teaching, and advancing the rule of law.
Judge Mascott also served as a Council Member of the ABA’s Administrative Law Section and as a Public Member of the Administrative Conference of the United States. She frequently testified before Congress on executive power, regulatory reform, and judicial jurisdiction, and participated in multiple Supreme Court confirmation hearings.
From 2019 to 2021, she took leave from academia to serve as Deputy Assistant Attorney General in the Department of Justice’s Office of Legal Counsel and later as Associate Deputy Attorney General, where she argued federal cases and assisted with Justice Amy Coney Barrett’s confirmation. Earlier in her career, she clerked for Justice Clarence Thomas and for then-Judge Brett M. Kavanaugh on the D.C. Circuit.
Judge Mascott earned her J.D. summa cum laude from the George Washington University Law School and her B.A. from the same institution.
Joseph L. Sax Collegiate Professor of Law and Co-Director of the Environmental and Energy Law Program, University of Michigan Law School
Charles Evans Hughes Professor of Law, Columbia Law School
THOMAS W. MERRILL is the Charles Evans Hughes Professor of Law at Columbia Law School. He previously taught at Northwestern University School of Law and Yale Law School. He has undergraduate degrees from Grinnell College and Oxford University, where he studied as a Rhodes Scholar, and a law degree from the University of Chicago. He clerked on the D.C. Circuit (for Chief Judge David Bazelon) and the U.S. Supreme Court (for Justice Harry Blackmun). From 1987-1990 he served as Deputy Solicitor General, U.S. Department of Justice. Professor Merrill’s writings related to property include Property: Principles and Policies (Foundation Press Second Edition, 2012) (with Henry E. Smith); Property: The Oxford Introductions to U.S. Law (Oxford U. Press, 2010); Property: Takings (Foundation Press, 2002)(with David Dana); and numerous articles, including “The Economics of Public Use” (Cornell Law Review 1986); “The Landscape of Constitutional Property” (Virginia Law Review 2000); and “The Character of the Governmental Action” (Vermont Law Review 2012). He is a member of the American Academy of Arts and Sciences.
Charles I. Francis Professorship in Law, University of Texas at Austin School of Law
Professor Aaron Nielson lectures and writes in the areas of administrative law, civil procedure, and federal courts. Before joining the faculty, he served as Solicitor General of Texas and represented Texas before the U.S. Supreme Court and the Texas Supreme Court, as well as overseeing all appellate litigation for the State. Earlier in his career, he was a professor at Brigham Young University and an appellate and antitrust partner in the Washington, D.C. office of Kirkland & Ellis LLP. He also clerked for Justice Samuel A. Alito, Jr. of the U.S. Supreme Court, Judge Janice Rogers Brown of the U.S. Court of Appeals for the D.C. Circuit, and Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit.
As Solicitor General, Professor Nielson successfully defended against a First Amendment challenge Texas’s law requiring online pornographers to institute age verification. In 2020, the U.S. Supreme Court appointed him to defend the constitutionality of a federal agency. He currently serves as a Senior Fellow of the Administrative Conference of the United States after completing a six-year term as an appointed public member and chair of the Conference’s Administration & Management Committee.
Nielson’s research focuses on administrative law, federal litigation, and the separation of powers. He has published (or soon will publish) in the Harvard Law Review, Columbia Law Review, University of Chicago Law Review, University of Pennsylvania Law Review, Duke Law Journal, Georgetown Law Journal, Cornell Law Review, and Northwestern University Law Review, among others. Nielson has been recognized for teaching for teaching and scholarship and in 2021 received the Federalist Society’s Joseph Story Award, which recognizes a young academic for excellence in legal scholarship, a commitment to teaching, and a concern for students, and who has made a significant public impact in a manner that advances the rule of law in a free society. He is also an elected member of the American Law Institute.
Professor Nielson received his J.D. magna cum laude from Harvard Law School and an LL.M from the University of Cambridge, where he focused his studies on the institutions that regulate global competition and commerce. He received his undergraduate degree summa cum laude from the University of Pennsylvania, majoring in economics and political science.
Associate Professor, University of Notre Dame Law School
Jeffrey Pojanowski joined the faculty and community of Notre Dame Law School in 2010. He teaches and writes in the areas of administrative law, jurisprudence, and torts. At present, his scholarship focuses on the legal theory of administrative action, as well as the philosophy and intellectual history of legal reasoning.
Prof. Pojanowski earned his A.B. in Public Policy with highest honors from Princeton University and graduated magna cum laude from Harvard Law School in 2004, where he was Articles Co-Chair for the Harvard Law Review. After law school, he served as a law clerk to then-Judge John Roberts on the United States Court of Appeals for the D.C. Circuit and then to Justice Anthony Kennedy on the Supreme Court of the United States. He then practiced law with Latham & Watkins in Washington, D.C., where he specialized in appellate litigation and administrative-law matters.
Judge, United States Court of Appeals, Sixth Circuit
Judge Readler earned his undergraduate and law degrees from the University of Michigan. After graduating, he served as a law clerk to Judge Alan Norris of the United States Court of Appeals for the Sixth Circuit. Judge Readler then began practicing law in the Columbus office of the international law firm Jones Day, eventually spending ten years as a partner in the firm’s Issues and Appeals Practice Group. While at Jones Day, Judge Readler appeared in state and federal trial and appellate courts around the country, most frequently the Supreme Court of Ohio and the Sixth Circuit. Judge Readler also successfully argued before the United States Supreme Court in McQuiggin v. Perkins on behalf of an inmate claiming actual innocence. His other pro bono representations include representing capital defendants before the Tenth Circuit and the Supreme Court of Ohio, as well as representing defendants sentenced to life in prison before the Sixth Circuit. While at Jones Day, Judge Readler traveled to Nairobi with Lawyers Without Borders to train Kenyan lawyers in prosecuting domestic violence cases, and he was also a recipient of the American Marshall Memorial Fellowship awarded by the German Marshall Fund of the United States. Following his career in private practice, Judge Readler served as Acting Assistant Attorney General for the Civil Division of the United States Department of Justice from 2017 to 2019. In that role, Judge Readler led and supervised over 1,000 lawyers in the Department’s largest litigating division, briefing and arguing several cases on behalf of the United States in federal courts across the country, including high-profile cases significant to the Administration and the Department. In March 2019, Judge Readler was confirmed to serve as a Circuit Judge on the Sixth Circuit. He resides in Columbus.
Samuel H. McCoy II Professor of Law, University of Virginia School of Law
John F. Duffy is the Samuel H. McCoy II Professor of Law and Class of 1966 Research Professor of Law at the University of Virginia School of Law, where he teaches administrative law, torts and intellectual property. Professor Duffy has published articles on a wide range of administrative law and regulatory issues in journals such as University of Chicago Law Review, Yale Law Journal, Stanford Law Review, Virginia Law Review, Columbia Law Review, Texas Law Review, Northwestern University Law Review, NYU Law Review, University of Pennsylvania Law Review and the Supreme Court Review. His 1998 article Administrative Common Law in Judicial Review, 77 Tex. L. Rev. 113 (1998), was one of the first articles to criticize the Chevron doctrine as being irreconcilable with § 706 of the APA; it won the American Bar Association’s Scholarship Award in Administrative Law. His 2008 article “Are Administrative Patent Judges Unconstitutional?” was covered on National Public Radio), in the New York Times (Adam Liptak, In One Flaw, Questions on Validity of 46 Judges, May 6, 2008), and in the Wall Street Journal (Dan Slater, Patently Unconstitutional, May 6, 2008). The NYT and WSJ agreed that he was “a different kind of law professor,” “one of the lucky few” whose “writings actually wind up changing the law.”
As an attorney in the courts, Duffy has twice successfully convinced the Supreme Court to overturn lower court doctrines that had been applied in many cases over decades but that were unanimously held to be irreconcilable with Supreme Court precedents. See TC Heartland v. Kraft Foods Group Brands, 581 U.S. 258 (2017); KSR v. Teleflex, 550 U.S. 398 (2007).
Prior to entering legal academics, Duffy clerked on the D.C. Circuit for Stephen Williams and on the Supreme Court for Antonin Scalia. While clerking, he became known as Justice Scalia’s “hapless law clerk,” who had been tasked with unearthing three-quarters of a century of legislative history that made “no difference” to the outcome in an otherwise forgettable case. See Conroy v. Aniskoff, 507 U.S. 511, 527-28 (1993) (Scalia, J., concurring in the judgment).
In earlier days, Duffy enjoyed being a professional blackjack player unwelcome in all Atlantic City casinos and a semi-professional road runner (best marathon time 2:24:33). He holds an A.B. in physics from Harvard and a J.D. from the University of Chicago.
Editor, SCOTUSblog
Professor of Law, University of Michigan Law School
Christopher J. Walker is a Professor of Law at the University of Michigan. Prior to joining Michigan law faculty in 2022, he spent a decade teaching at The Ohio State University Moritz College of Law. He previously clerked for Justice Anthony Kennedy of the U.S. Supreme Court, worked on the Civil Appellate Staff at the U.S. Department of Justice, and served on the Senate Judiciary Committee staff for the Gorsuch Supreme Court confirmation. Professor Walker’s research focuses on administrative law, regulation, and law and policy at the agency level. Outside the law school, he chaired the American Bar Association’s Section of Administrative Law and Regulatory Practice in 2020-21 and served as one of forty Public Members of the Administrative Conference of the United States from 2016-2022, and he continues to serve in both organizations in various capacities. He also works of counsel at the U.S. Chamber Litigation Center. In 2022, he received the Federalist Society’s Joseph Story Award.
Samuel H. McCoy II Professor of Law, University of Virginia School of Law
John F. Duffy is the Samuel H. McCoy II Professor of Law and Class of 1966 Research Professor of Law at the University of Virginia School of Law, where he teaches administrative law, torts and intellectual property. Professor Duffy has published articles on a wide range of administrative law and regulatory issues in journals such as University of Chicago Law Review, Yale Law Journal, Stanford Law Review, Virginia Law Review, Columbia Law Review, Texas Law Review, Northwestern University Law Review, NYU Law Review, University of Pennsylvania Law Review and the Supreme Court Review. His 1998 article Administrative Common Law in Judicial Review, 77 Tex. L. Rev. 113 (1998), was one of the first articles to criticize the Chevron doctrine as being irreconcilable with § 706 of the APA; it won the American Bar Association’s Scholarship Award in Administrative Law. His 2008 article “Are Administrative Patent Judges Unconstitutional?” was covered on National Public Radio), in the New York Times (Adam Liptak, In One Flaw, Questions on Validity of 46 Judges, May 6, 2008), and in the Wall Street Journal (Dan Slater, Patently Unconstitutional, May 6, 2008). The NYT and WSJ agreed that he was “a different kind of law professor,” “one of the lucky few” whose “writings actually wind up changing the law.”
As an attorney in the courts, Duffy has twice successfully convinced the Supreme Court to overturn lower court doctrines that had been applied in many cases over decades but that were unanimously held to be irreconcilable with Supreme Court precedents. See TC Heartland v. Kraft Foods Group Brands, 581 U.S. 258 (2017); KSR v. Teleflex, 550 U.S. 398 (2007).
Prior to entering legal academics, Duffy clerked on the D.C. Circuit for Stephen Williams and on the Supreme Court for Antonin Scalia. While clerking, he became known as Justice Scalia’s “hapless law clerk,” who had been tasked with unearthing three-quarters of a century of legislative history that made “no difference” to the outcome in an otherwise forgettable case. See Conroy v. Aniskoff, 507 U.S. 511, 527-28 (1993) (Scalia, J., concurring in the judgment).
In earlier days, Duffy enjoyed being a professional blackjack player unwelcome in all Atlantic City casinos and a semi-professional road runner (best marathon time 2:24:33). He holds an A.B. in physics from Harvard and a J.D. from the University of Chicago.
Editor, SCOTUSblog
Professor of Law, University of Michigan Law School
Christopher J. Walker is a Professor of Law at the University of Michigan. Prior to joining Michigan law faculty in 2022, he spent a decade teaching at The Ohio State University Moritz College of Law. He previously clerked for Justice Anthony Kennedy of the U.S. Supreme Court, worked on the Civil Appellate Staff at the U.S. Department of Justice, and served on the Senate Judiciary Committee staff for the Gorsuch Supreme Court confirmation. Professor Walker’s research focuses on administrative law, regulation, and law and policy at the agency level. Outside the law school, he chaired the American Bar Association’s Section of Administrative Law and Regulatory Practice in 2020-21 and served as one of forty Public Members of the Administrative Conference of the United States from 2016-2022, and he continues to serve in both organizations in various capacities. He also works of counsel at the U.S. Chamber Litigation Center. In 2022, he received the Federalist Society’s Joseph Story Award.
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