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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Grassley, Chuck [R-IA]* 05/24/2012
Sen. Kohl, Herb [D-WI] 06/28/2012
Sen. Hatch, Orrin G. [R-UT] 06/28/2012
Sen. Rubio, Marco [R-FL] 06/28/2012
Sen. Schumer, Charles E. [D-NY] 06/28/2012
Sen. Lee, Mike [R-UT] 06/28/2012
Sen. Conrad, Kent [D-ND] 06/28/2012
Sen. Collins, Susan M. [R-ME] 08/02/2012