Jennifer Lee Mascott

Appointments

• Judge, U.S. Court of Appeals for the Third CircuitDonald J. Trump · Oct 9, 2025

Education

• University of MarylandB.S.
• George Washington University Law SchoolJ.D., 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

More

• All federal judges