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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Inhofe, James M. [R-OK]* 04/06/2005
Sen. Vitter, David [R-LA]* 04/06/2005
Sen. Warner, John [R-VA]* 04/06/2005
Sen. Voinovich, George V. [R-OH]* 04/06/2005
Sen. Isakson, Johnny [R-GA]* 04/06/2005
Sen. Thune, John [R-SD]* 04/06/2005
Sen. Murkowski, Lisa [R-AK]* 04/06/2005
Sen. Obama, Barack [D-IL]* 04/06/2005
Sen. Landrieu, Mary L. [D-LA]* 04/06/2005
Sen. Grassley, Chuck [R-IA]* 04/06/2005
Sen. Harkin, Tom [D-IA]* 04/06/2005
Sen. Talent, Jim [R-MO]* 04/06/2005
Sen. Cornyn, John [R-TX]* 04/06/2005
Sen. Cochran, Thad [R-MS]* 04/06/2005
Sen. Domenici, Pete V. [R-NM]* 04/06/2005
Sen. Coleman, Norm [R-MN]* 04/06/2005
Sen. Durbin, Richard [D-IL] 04/26/2005
Sen. Hagel, Chuck [R-NE] 04/24/2006
Sen. Akaka, Daniel K. [D-HI] 05/08/2006