Jack Smith (lawyer) John Luman Smith (born June 5, 1969) is an American attorney who has served in the United States Department of Justice as an assistant U.S. attorney, acting U.S. attorney, and head of the department's Public Integrity Section. He was also the chief prosecutor at the Kosovo Specialist Chambers, an international tribunal at The Hague tasked with investigating and prosecuting war crimes in the Kosovo War. He served as a special counsel for the Department of Justice from November 18, 2022, until his resignation on January 10, 2025.