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.
Associate Justice, Supreme Court of the United States
Clarence Thomas, Associate Justice, was born in the Pinpoint community near Savannah, Georgia on June 23, 1948. He attended Conception Seminary from 1967-1968 and received an A.B., cum laude, from Holy Cross College in 1971 and a J.D. from Yale Law School in 1974. He was admitted to law practice in Missouri in 1974, and served as an Assistant Attorney General of Missouri, 1974-1977; an attorney with the Monsanto Company, 1977-1979; and Legislative Assistant to Senator John Danforth, 1979-1981. From 1981–1982 he served as Assistant Secretary for Civil Rights, U.S. Department of Education, and as Chairman of the U.S. Equal Employment Opportunity Commission, 1982-1990. From 1990–1991, he served as a Judge on the United States Court of Appeals for the District of Columbia Circuit. President Bush nominated him as an Associate Justice of the Supreme Court and he took his seat October 23, 1991. He married Virginia Lamp on May 30, 1987 and has one child, Jamal Adeen by a previous marriage.
Clayton J. and Henry R. Barber Professor of Law, Northwestern University Pritzker School of Law and Co-Chairman, Board of Directors, The Federalist Society
STEVEN GOW CALABRESI is the Clayton J. & Henry R. Barber Professor at Northwestern Pritzker School of Law. He has also co-taught in the Fall semester at Yale Law School from 2013 to the present. Calabresi clerked for Justice Antonin Scalia and Judges Robert H. Bork and Ralph K. Winter. He was a Special Assistant to Attorney General Meese from 1985 to 1987 and worked with Ken Cribb as his deputy in 1987 on the second floor of the West Wing of the Reagan White House. Calabresi has written books on presidential power and comparative constitutional law and the origins of judicial review. He and Gary Lawson are the co-editors of a casebook on U.S. Constitutional Law, and Calabresi is also the co-editor of a casebook on comparative constitutional law. He has written over seventy law review articles since 1990.
Ellison C. Palmer Professor of Tax Law, Mercer University School of Law
Linda Jellum is the Ellison C. Palmer Sr. Professor of Law at Mercer University School of Law and a visiting professor at Tulane University School of law. She teaches Tax Courses, Administrative Law, and Statutory Interpretation. In addition to teaching, Professor Jellum is a prolific scholar and has written extensively in the areas of Tax Law, Administrative Law, and Statutory Interpretation. Her numerous articles have appeared in top law journals, such as the Southern Methodist Law Review, the Miami Law Review, the UCLA Law Review, and the Ohio State Law Journal. She has also authored multiple books and book chapters on statutory interpretation.
Professor Jellum has been a leader in legal education. She is currently the Treasurer for the Southeastern Association of Law Schools; Chair of the Association of American Law School’s Section on Administrative Law; and Vice-chair for American Bar Association Section’s on Administrative Law and Regulatory Practice. Formerly, she served as the Deputy Director for the Association of American Law Schools.
Before joining the faculty, Professor Jellum worked for the Washington State Attorney General’s office. While there, she served as lead attorney for the Department of Social and Health Services. Prior to working as an assistant attorney general, she served as a law clerk for the Honorable Paul Yesawich.
Professor Jellum received her J.D. from Cornell Law School and her undergraduate degree from Cornell University. She has the unique honor of having sat for and passed five states’ bar exams.
SSRN: http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=624243
Judge, United States Court of Appeals, Fifth Circuit
Edith Jones graduated from Alamo Heights High School, where she was a National Merit Scholar. In 1971, she received her B.A. in Economics from Cornell University, graduating with honors. In 1974, she was awarded her J.D. at the University of Texas Law School, where she was a law review editor and received the Order of the Coif.
Judge Jones was the first female partner at Andrews, Kurth, Campbell & Jones (now Hunton Andrews Kurth) where she practiced various types of litigation and bankruptcy cases. Judge Jones went on the federal bench on June 1, 1985.
Judge Jones served as a former member of the National Bankruptcy Review Commission, and as a member of the Judicial Conference Commission on Bankruptcy Rules. Judge Jones served on the White House Fellows Commission. Judge Jones served on the board of the Sam Houston Area Council of the Boy Scouts of America. She has been a member of the Garland Walker Inn of Court in Houston for more than 20 years and its President for at least ten years. Judge Jones is also on the Board of the Calvin Coolidge Presidential Foundation.
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.
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.
Clayton J. and Henry R. Barber Professor of Law, Northwestern University Pritzker School of Law and Co-Chairman, Board of Directors, The Federalist Society
STEVEN GOW CALABRESI is the Clayton J. & Henry R. Barber Professor at Northwestern Pritzker School of Law. He has also co-taught in the Fall semester at Yale Law School from 2013 to the present. Calabresi clerked for Justice Antonin Scalia and Judges Robert H. Bork and Ralph K. Winter. He was a Special Assistant to Attorney General Meese from 1985 to 1987 and worked with Ken Cribb as his deputy in 1987 on the second floor of the West Wing of the Reagan White House. Calabresi has written books on presidential power and comparative constitutional law and the origins of judicial review. He and Gary Lawson are the co-editors of a casebook on U.S. Constitutional Law, and Calabresi is also the co-editor of a casebook on comparative constitutional law. He has written over seventy law review articles since 1990.
Ellison C. Palmer Professor of Tax Law, Mercer University School of Law
Linda Jellum is the Ellison C. Palmer Sr. Professor of Law at Mercer University School of Law and a visiting professor at Tulane University School of law. She teaches Tax Courses, Administrative Law, and Statutory Interpretation. In addition to teaching, Professor Jellum is a prolific scholar and has written extensively in the areas of Tax Law, Administrative Law, and Statutory Interpretation. Her numerous articles have appeared in top law journals, such as the Southern Methodist Law Review, the Miami Law Review, the UCLA Law Review, and the Ohio State Law Journal. She has also authored multiple books and book chapters on statutory interpretation.
Professor Jellum has been a leader in legal education. She is currently the Treasurer for the Southeastern Association of Law Schools; Chair of the Association of American Law School’s Section on Administrative Law; and Vice-chair for American Bar Association Section’s on Administrative Law and Regulatory Practice. Formerly, she served as the Deputy Director for the Association of American Law Schools.
Before joining the faculty, Professor Jellum worked for the Washington State Attorney General’s office. While there, she served as lead attorney for the Department of Social and Health Services. Prior to working as an assistant attorney general, she served as a law clerk for the Honorable Paul Yesawich.
Professor Jellum received her J.D. from Cornell Law School and her undergraduate degree from Cornell University. She has the unique honor of having sat for and passed five states’ bar exams.
SSRN: http://papers.ssrn.com/sol3/cf_dev/AbsByAuth.cfm?per_id=624243
Judge, United States Court of Appeals, Fifth Circuit
Edith Jones graduated from Alamo Heights High School, where she was a National Merit Scholar. In 1971, she received her B.A. in Economics from Cornell University, graduating with honors. In 1974, she was awarded her J.D. at the University of Texas Law School, where she was a law review editor and received the Order of the Coif.
Judge Jones was the first female partner at Andrews, Kurth, Campbell & Jones (now Hunton Andrews Kurth) where she practiced various types of litigation and bankruptcy cases. Judge Jones went on the federal bench on June 1, 1985.
Judge Jones served as a former member of the National Bankruptcy Review Commission, and as a member of the Judicial Conference Commission on Bankruptcy Rules. Judge Jones served on the White House Fellows Commission. Judge Jones served on the board of the Sam Houston Area Council of the Boy Scouts of America. She has been a member of the Garland Walker Inn of Court in Houston for more than 20 years and its President for at least ten years. Judge Jones is also on the Board of the Calvin Coolidge Presidential Foundation.
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.
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.
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.
A Conversation with Justice Thomas
Jenn L. Mascott, Clarence Thomas
2018 National Student Symposium
The Georgetown Student Chapter hosted this conversation with Justice Thomas during the 2018 National...
Showcase Panel I: Administrative Agencies and the Federal Judiciary
Steven G. Calabresi, Linda Jellum, Edith H. Jones, Jenn L. Mascott, Gillian E. Metzger
2017 National Lawyers Convention
Statutory administrative law judges (ALJ) located within each agency adjudicate administrative law cases brought by...
Showcase Panel I: Administrative Agencies and the Federal Judiciary
Steven G. Calabresi, Linda Jellum, Edith H. Jones, Jenn L. Mascott, Gillian E. Metzger
2017 National Lawyers Convention
Statutory administrative law judges (ALJ) located within each agency adjudicate administrative law cases brought by...
Sheriff v. Gillie - Post-Decision SCOTUScast
Jenn L. Mascott
SCOTUScast 6-1-16 featuring Jennifer Mascott
On May 16, 2016, the Supreme Court decided Sheriff v. Gillie. This case involves litigation...