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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Risch, James E. [R-ID]* 06/20/2013
Sen. Bennet, Michael F. [D-CO]* 06/20/2013
Sen. Hagan, Kay [D-NC]* 06/20/2013
Sen. Klobuchar, Amy [D-MN]* 06/20/2013
Sen. Tester, Jon [D-MT]* 06/20/2013
Sen. Barrasso, John [R-WY]* 06/20/2013
Sen. Crapo, Mike [R-ID]* 06/20/2013
Sen. Thune, John [R-SD]* 06/20/2013
Sen. Begich, Mark [D-AK]* 06/20/2013
Sen. Pryor, Mark L. [D-AR]* 06/20/2013
Sen. Enzi, Michael B. [R-WY]* 06/20/2013
Sen. Heller, Dean [R-NV]* 06/20/2013
Sen. Murkowski, Lisa [R-AK] 06/25/2013
Sen. King, Angus S. Jr. [I-ME] 10/28/2013
Sen. Collins, Susan M. [R-ME] 03/24/2014