Leo O’Malley

Leo joined Becket as a Constitutional Law Fellow in September 2026.

Before coming to Becket, Leo served as Senior Counsel to Senator Mike Lee on the U.S. Senate Judiciary Committee. In that capacity, he advised the Senator on a diverse portfolio encompassing constitutional rights, federal judicial nominations, national security matters, citizenship and immigration, criminal justice reform, and Supreme Court amicus briefs. Previously, he also served as a law clerk to Judge J. Campbell Barker of the U.S. District Court for the Eastern District of Texas and Justice Janine M. Kern of the South Dakota Supreme Court. After his fellowship with Becket, he will go on to clerk for the U.S. Court of Appeals for the Third Circuit.

Leo graduated with honors from the University of Notre Dame School of Law, where he directed the 2022–23 ND Religious Freedom Tournament, worked as a research assistant for Professor Stephanie Barclay, and won multiple awards for his oral advocacy on religious liberty topics. During law school, he also interned at the St. Thomas More Society and the Napa Legal Institute. Leo previously attended Wheaton College on a National Merit Scholarship, graduating summa cum laude with a B.S. in Applied Mathematics and a B.M. in Organ Performance.

In his free time, Leo enjoys reading fantasy novels, practicing his violin, cooking, and exploring historical architecture.

Not admitted to the D.C. Bar; admitted only in South Dakota. Practice limited to cases in federal court. Supervised by licensed D.C. Bar members.