Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Partner, Faegre Drinker Biddle & Reath LLP
Brian J. Paul is an appellate lawyer and leads law teams in high-stakes commercial litigation. He has briefed and argued everything from weighty abstract constitutional issues to dollars-and-cents business issues and everything in-between, both on appeal and in trial courts around the country. A member of the American Law Institute, recent past-president of the Seventh Circuit Bar Association and top-tier ranked Chambers appellate lawyer, Brian had one client say about him: “Brian is one of the most respected and skilled appellate lawyers, not only in Indianapolis but across the country. He is trusted to deliver timely guidance on complex issues.” Another said: “He is excellent. I enjoyed working with him. He is able to put things into layman’s terms and explains things really well. His written and oral advocacy are short, crisp and to the point.”
Clients hire Brian to digest the complex, and make the complex simple and compelling for busy, generalist judges. In his writing, he strives to cut through jargon and legalese, and distill things down to what’s important. In his oral advocacy, by intense preparation, he strives to be the advocate whom judges trust for the right answers. In the dozens of cases he has argued, Brian has helped clients win on both sides of the “v.” His recent representations include:
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
Partner, Faegre Drinker Biddle & Reath LLP
Brian J. Paul is an appellate lawyer and leads law teams in high-stakes commercial litigation. He has briefed and argued everything from weighty abstract constitutional issues to dollars-and-cents business issues and everything in-between, both on appeal and in trial courts around the country. A member of the American Law Institute, recent past-president of the Seventh Circuit Bar Association and top-tier ranked Chambers appellate lawyer, Brian had one client say about him: “Brian is one of the most respected and skilled appellate lawyers, not only in Indianapolis but across the country. He is trusted to deliver timely guidance on complex issues.” Another said: “He is excellent. I enjoyed working with him. He is able to put things into layman’s terms and explains things really well. His written and oral advocacy are short, crisp and to the point.”
Clients hire Brian to digest the complex, and make the complex simple and compelling for busy, generalist judges. In his writing, he strives to cut through jargon and legalese, and distill things down to what’s important. In his oral advocacy, by intense preparation, he strives to be the advocate whom judges trust for the right answers. In the dozens of cases he has argued, Brian has helped clients win on both sides of the “v.” His recent representations include:
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.
Max E. Greenberg Professor of Contract Law, New York University School of Law
Professor Clayton Gillette joined the New York University School of Law faculty in 2000. For the prior eight years, he was the Perre Bowen Professor of Law at the University of Virginia School of Law. Professor Gillette began his teaching career at Boston University where he served as the Warren Scholar in Municipal Law and Associate Dean, and has been a visiting professor at the University of Michigan and the University of Virginia as well as at NYU School of Law.
Professor Gillette earned his J.D. from the University of Michigan in 1975 and a B.A. from Amherst College in 1972. After law school, he clerked for Judge J. Edward Lumbard of the United States Court of Appeals for the Second Circuit, and was associated with Cleary, Gottlieb, Steen and Hamilton in New York City.
Gillette's scholarship concentrates on commercial law and local government law. He is the author of casebooks on Local Government Law (with Lynn Baker) and Payment Systems and Credit Instruments (with Alan Schwartz and Robert Scott), and a textbook on Municipal Debt Finance Law (with Robert S. Amdursky). Gillette's numerous articles include studies of long-term commercial contracts, initiatives, relations between localities and their neighbors, privatization of municipal services, and judicial construction of contracts governing homeowners associations. He has also served as the Reporter for the ABA Intersectional Task Force on Initiatives and Referenda and has consulted in litigation ranging from the Agent Orange Products Liability Litigation to the default on municipal bonds by Orange County, California and the Washington Public Power Supply System.
Judge, United States Court of Appeals, District of Columbia Circuit
Judge Katsas was appointed to the D.C. Circuit in December 2017. He graduated from Princeton University and Harvard Law School, where he was an executive editor on the Harvard Law Review. Between 1989 and 1992, he served as a law clerk to Judge Edward Becker on the Third Circuit, to then-Judge Clarence Thomas on the D.C. Circuit, and to Justice Thomas on the Supreme Court. Between 1992 and 2001, he was an associate and then partner in the Washington office of Jones Day, where he specialized in appellate and complex civil litigation. Between 2001 and 2009, he served in many senior positions in the Department of Justice, including as Assistant Attorney General for the Civil Division and as Acting Associate Attorney General. In 2009, he returned to Jones Day. From January to December 2017, he served as Deputy Assistant to the President and Deputy Counsel to the President.
Before joining the bench, Judge Katsas argued more than 75 appeals, including three cases in the Supreme Court, 13 cases in the D.C. Circuit, and cases in every other federal court of appeals. By appointment of the Chief Justice, he served on the Advisory Committee on Appellate Rules from 2013 to 2017. In 2016, he was elected to membership in the American Academy of Appellate Lawyers.
George C. Dix Professor in Constitutional Law, Northwestern University Pritzker School of Law
John O. McGinnis is a graduate of Harvard College and Harvard Law School where he was an editor of the Harvard Law Review. He also has an MA degree from Balliol College, Oxford, in philosophy and theology. Professor McGinnis clerked on the U.S. Court of Appeals for the District of Columbia. From 1987 to 1991, he was deputy assistant attorney general in the Office of Legal Counsel at the Department of Justice. He is the author of Accelerating Democracy: Transforming Government Through Technology (Princeton 2013) and Originalism and the Good Constitution (Harvard 2013) (with M. Rappaport). He is a past winner of the Paul Bator award given by the Federalist Society to an outstanding academic under 40. He has been listed by the United States on the roster of panelists who may be called upon to decide World Trade Organization Disputes.
Carmack Waterhouse Professor of Constitutional Law, Georgetown Law
After graduating from Harvard Law School in 1971, Professor Seidman served as a law clerk for J. Skelly Wright of the D.C. Circuit and U.S. Supreme Court Justice Thurgood Marshall. He then was a staff attorney with the D.C. Public Defender Service until joining the Law Center faculty in 1976. He teaches a variety of courses in the fields of constitutional and criminal law. He is co-author of a constitutional law casebook and the author of many articles concerning criminal justice and constitutional law. His most recent books are Silence and Freedom (Stanford 2007), Our Unsettled Constitution: A New Defense of Constitutionalism and Judicial Review (Yale 2001) and Equal Protection of the Laws (Foundation 2002).
Preview of the 2011-12 Term of the U.S. Supreme Court
ObamaCare Debate
St. Louis, MissouriSupreme Court Roundup
Obamacare: The Individual Mandate and its Future After the 11th Circuit Strikes it Down
Dallas, TexasDefending the Defense of Marriage Act
Gregory G. Katsas, Brian J. Paul
On August 18, 2011, the Indianapolis Lawyers Chapter of the Federalist Society hosted an event...
Defending the Defense of Marriage Act
Indianapolis Lawyers Chapter
Indianapolis, IN2011 Supreme Court Round-Up
Winston-Salem, North CarolinaSupreme Court Round Up
Raleigh, North CarolinaPerspectives on the Legal Challenge to the Patient Protection and Affordable Care Act
Panel II: Federalism and Interstate Competition
Jonathan H. Adler, Clayton Gillette, Gregory G. Katsas, John O. McGinnis, Lauren Prieb, Louis Michael Seidman
This panel will assess American federalism as a competitive institution that offers a marketplace of...