Jennifer Lee Mascott
Judge, U.S. Court of Appeals for the Third Circuit.
Federal judicial service
Newest firstJudge, U.S. Court of Appeals for the Third Circuit
- Appointed by
- Donald J. Trump (Republican)
- Nominated
- Sep 2, 2025
- Senate vote
- 50 to 47
- Confirmed
- Oct 9, 2025
- Commissioned
- Oct 10, 2025
Education
- B.S., University of Maryland
- J.D., George Washington University Law School, 2006
Career
- Law clerk, Hon. Brett M. Kavanaugh, U.S. Court of Appeals for the District of Columbia Circuit, 2006-2007
- Law clerk, Hon. Clarence Thomas, Supreme Court of the United States, 2008-2009
- George Washington University Law School, 2011-2013, 2015-2017
- professorial lecturer in law, 2011, 2012, 2012-2013, 2015
- Olin/Searle Fellow, 2016-2017
- Olin/Searle Fellow, Georgetown University Law Center, 2015-2017
- Private practice, Arlington, Virginia, 2017-2019
- Assistant professor of law, George Mason University Antonin Scalia Law School, 2017-2024 (on leave 2019-2021)
- co-director, Administrative Law and Supreme Court Clinics, 2017-2018
- faculty director and founder, Separation of Powers Student Litigation Clinic, 2021-2024
- co-executive director, C. Boyden Gray Center for the Study of the Administrative State, 2021-2024
- U.S. Department of Justice, 2019-2021
- deputy assistant attorney general, Office of Legal Counsel, 2019-2020, 2020-2021
- associate deputy attorney general, 2020-2021
- Associate professor of law, Catholic Law School, 2024-2025
- founder and director, Separation of Powers Institute and Student Litigation Clinic, 2024-2025
- Senior counsel, White House Counsel's Office, 2025
DataSources: Federal Judicial Center, Biographical Directory of Article III Federal JudgesData as of Oct 29, 2026
A work of the U.S. government, not under copyright (17 U.S.C. 105).