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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Johnson, Ron [R-WI]* 04/18/2012
Sen. McCain, John [R-AZ]* 04/18/2012
Sen. Collins, Susan M. [R-ME] 04/19/2012
Sen. Lee, Mike [R-UT] 04/23/2012
Sen. Moran, Jerry [R-KS] 04/23/2012
Sen. Thune, John [R-SD] 04/23/2012
Sen. Ayotte, Kelly [R-NH] 04/23/2012
Sen. Toomey, Pat [R-PA] 04/23/2012
Sen. Barrasso, John [R-WY] 04/23/2012
Sen. Kyl, Jon [R-AZ] 04/23/2012
Sen. Grassley, Chuck [R-IA] 04/23/2012
Sen. McConnell, Mitch [R-KY] 04/23/2012
Sen. Burr, Richard [R-NC] 04/23/2012
Sen. Inhofe, James M. [R-OK] 04/23/2012
Sen. Enzi, Michael B. [R-WY] 04/24/2012