Leslie has been an attorney with the Reporters Committee since 1994 and has served as the Legal Defense Director since 2000. He supervises the Committee's amicus brief writing efforts and journalism hotline services and is regularly interviewed by journalists on media law topics. He also serves as editor of the Reporters Committee's news publications and guides. Gregg has served as a member of the American Bar Association's Fair Trial and Free Press Task Force, as chairman of the D.C. Bar's Media Law Committee, and as a member of the bar's Arts, Entertainment, Media and Sports Law Section. Before and during law school, Leslie worked as a journalist and research director for a Washington business and political magazine.