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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Enzi, Michael B. [R-WY]* 05/26/2011
Sen. Crapo, Mike [R-ID]* 05/26/2011
Sen. Risch, James E. [R-ID]* 05/26/2011
Sen. Thune, John [R-SD]* 05/26/2011
Sen. Heller, Dean [R-NV]* 05/26/2011
Sen. Hatch, Orrin G. [R-UT]* 05/26/2011
Sen. Lee, Mike [R-UT] 03/21/2012
Sen. Hoeven, John [R-ND] 03/21/2012