Matthew is a director of Brown Advisory Incorporated and serves as chair of the audit committee. He is a partner and the head of U.S. Public Policy and Government Relations at Dentons LLP, the largest law firm in the world. He focuses primarily on federal tax policy, but also has an extensive background in corporate litigation. Matthew serves on the Federal City Council Board as vice president and as chairman of the Langston Initiative Project, a nonprofit created to redevelop Washington, D.C.'s publicly owned golf courses. He also serves on the Governing Board of the National Cathedral School and on the board of the Ron Brown Scholar Program. Matthew is an Aspen Institute’s Socrates Program Scholar. He was formerly a member of Presidential Candidate Barack Obama’s Mid-Atlantic Finance Committee and Mayor Adrian M. Fenty’s Transition team and served as chair of the Washington, D.C. Sports and Entertainment Commission, overseeing the capital construction of the Washington National's baseball stadium.