%0 Generic %T IRS Commissioner John Koskinen : hearing before the Committee on Ways and Means, U.S. House of Representatives, One Hundred Thirteenth Congress, second session, June 20, 2014. %U https://ezaccess.libraries.psu.edu/login?url=https://www.heinonline.org/HOL/Page?handle=hein.cbhear/fdsysanur0001&id=1&size=2&collection=congrec&index=cbhear