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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Salazar, Ken [D-CO]* 10/04/2007
Sen. Murkowski, Lisa [R-AK]* 10/04/2007
Sen. Landrieu, Mary L. [D-LA]* 10/04/2007
Sen. Thune, John [R-SD]* 10/04/2007
Sen. Johnson, Tim [D-SD]* 10/04/2007
Sen. Warner, John [R-VA]* 10/04/2007
Sen. Lieberman, Joseph I. [ID-CT]* 10/04/2007
Sen. Martinez, Mel [R-FL]* 10/04/2007
Sen. Bunning, Jim [R-KY]* 10/04/2007
Sen. Domenici, Pete V. [R-NM] 02/13/2008
Sen. Specter, Arlen [R-PA] 02/25/2008
Sen. Barrasso, John [R-WY] 04/29/2008