Jake Sullivan is a visiting lecturer in law and the Oscar M. Ruebhausen Distinguished Visiting Lecturer in National Security at Yale Law School, as well as a senior fellow at Yale's Jackson Institute for Global Affairs. Until 2014 he served as a national security adviser to Vice President Joe Biden. Previously, he served as director of policy planning at the U.S. Department of State and as deputy chief of staff to Secretary of State Hillary Clinton. He was deputy policy director on her 2008 presidential primary campaign, and a member of the debate preparation team for Barack Obama's general election campaign. Sullivan also served as a senior policy adviser and chief counsel to Senator Amy Klobuchar from his home state of Minnesota and worked as an associate for Faegre & Benson LLP. He clerked for Judge Stephen Breyer of the U.S. Supreme Court and Judge Guido Calabresi of the U.S. Court of Appeals for the Second Circuit.