Nominations of Mark J. Mazur, Matthew S. Rutherford, and Meredith M. Broadbent : hearing before the Committee on Finance, United States Senate, One Hundred Twelfth Congress, second session, on the nominations of Mark J. Mazur, to be Assistant Secretary for tax Policy, Department of the Treasury; Matthew S. Rutherford, to be Assistant Secretary for Financial Markets, Department of the Treasury; and Meredith M. Broadbent, to be a member of the United States International Trade Commission, May 8, 2012.