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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Ensign, John [R-NV]* 03/28/2007
Sen. Martinez, Mel [R-FL]* 03/28/2007
Sen. DeMint, Jim [R-SC]* 03/28/2007
Sen. Vitter, David [R-LA] 09/19/2007
Sen. Kyl, Jon [R-AZ] 11/13/2007