hearing before the Subcommittee on Social Security of the Committee on Ways and Means, U.S. House of Representatives, One Hundred Twelfth Congress, first session, April 14, 2011 United States Congress. House. Committee on Ways and Means. Subcommittee on Social Security. creator text dcu Washington U.S. G.P.O. 2012 monographic eng iii, 170 p. ill 24 cm. "Serial no. 112-SS3." Includes bibliographical references. United States Social Security Administration. Rules and practice U.S. Citizenship and Immigration Services. Rules and practice Foreign worker certification United States Employee screening United States Immigration enforcement United States Illegal aliens Employment United States Y 4.W 36:112-SS 3 Y 4.W 36:112-SS 3 http://purl.fdlp.gov/GPO/gpo21342 http://purl.fdlp.gov/GPO/gpo21342 PUCPR 120411 20160527190238.0 310157