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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Vitter, David [R-LA]* 05/24/2007
Sen. Lieberman, Joseph I. [ID-CT]* 05/24/2007
Sen. Lautenberg, Frank R. [D-NJ]* 05/24/2007
Sen. Menendez, Robert [D-NJ]* 05/24/2007
Sen. Ensign, John [R-NV] 06/04/2007