Nominations of William V. Corr, Demetrios J. Marantis, and Alan B. Krueger : hearing before the Committee on Finance, United States Senate, One Hundred Eleventh Congress, first session, on the nominations of William V. Corr, to be deputy secretary, Department of Health and Human Services; Demetrios J. Marantis, to be a deputy U.S. trade representative with the rank of ambassador; and Alan B. Krueger, to be assistant secretary for economic policy, Department of the Treasury, April 30, 2009.