Legal career
After law school,Mascott was a law clerk to then-judge Brett Kavanaugh of the U.S. Court of Appeals for the D.C. Circuit from 2006 to 2007 and then to Justice Clarence Thomas of the U.S. Supreme Court from 2008 to 2009. From 2011 to 2017,she was a lecturer at George Washington University Law School and from 2015 to 2017 was an Olin/Searle Fellow at Georgetown University Law Center. From 2017 to 2024,she was an assistant professor of law at the Antonin Scalia Law School of George Mason University,and she received the Federalist Society's 2023 Joseph Story Award. From 2017 to 2019,Mascott was also of counsel at the law firm Consovoy McCarthy Park PLLC in Arlington,Virginia. [3]
During Donald Trump's first term,Mascott served as Deputy Assistant Attorney General in the Office of Legal Counsel from 2019 to 2020 and as Associate Deputy Attorney General in the United States Department of Justice from November 2020 through January 2021. In 2021,Mascott left the Justice Department to work as an Assistant Professor of Law at the Antonin Scalia Law School at George Mason University,where she worked until 2024. [2] She then worked as a Managing Trustee at Adfero,a public relations firm,until 2025. [3]
In 2025,she served in the White House Counsel's Office as Senior Advisor under Trump. Mascott also serves as an Associate Professor of Law at the Columbus School of Law at the Catholic University of America where she is currently on public service leave. [2] [3]
Nomination to court of appeals
On July 16,2025,President Donald Trump announced his intention to nominate Mascott to a seat on the United States Court of Appeals for the Third Circuit vacated by Kent A. Jordan. On September 3,2025,she testified before the U.S. Senate Judiciary Committee. Democrats on the committee questioned her about her ties to the state of Delaware and her views on the separation of powers. She stated,"I've been nominated to a seat that by custom now is within Delaware and would look forward,if this body were to confirm me,to joining the legal community specifically in Delaware." [4] On October 1,2025,her nomination was reported from the Senate Judiciary Committee by a 12–10 vote party-line vote. [5] On October 8,2025,the United States Senate invoked cloture on her nomination by a 50–47 vote. [6] On October 9,2025,her nomination was confirmed by a 50–47 vote,with Senator Lisa Murkowski voting against her confirmation. [7] She received her judicial commission on October 10,2025. [8]
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