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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Warner, John [R-VA]* 02/26/2007
Sen. Menendez, Robert [D-NJ]* 02/26/2007
Sen. Reed, Jack [D-RI]* 02/26/2007
Sen. Biden, Joseph R., Jr. [D-DE]* 02/26/2007
Sen. Clinton, Hillary Rodham [D-NY]* 02/26/2007
Sen. Whitehouse, Sheldon [D-RI]* 02/26/2007
Sen. Dodd, Christopher J. [D-CT]* 02/26/2007
Sen. Specter, Arlen [R-PA]* 02/26/2007
Sen. Schumer, Charles E. [D-NY] 07/16/2008
Sen. Casey, Robert P., Jr. [D-PA] 09/08/2008
Sen. Cardin, Benjamin L. [D-MD] 09/08/2008