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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Craig, Larry E. [R-ID]* 03/21/2007
Sen. Dorgan, Byron L. [D-ND]* 03/21/2007
Sen. Vitter, David [R-LA]* 03/21/2007
Sen. Klobuchar, Amy [D-MN]* 03/21/2007
Sen. Tester, Jon [D-MT]* 03/21/2007
Sen. Landrieu, Mary L. [D-LA]* 03/21/2007
Sen. Crapo, Mike [R-ID]* 03/21/2007
Sen. Baucus, Max [D-MT]* 03/21/2007
Sen. Cantwell, Maria [D-WA]* 03/21/2007
Sen. Johnson, Tim [D-SD] 05/07/2007
Sen. Thune, John [R-SD] 05/08/2007
Sen. Feingold, Russell D. [D-WI] 07/21/2008