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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Cardin, Benjamin L. [D-MD]* 05/09/2007
Sen. Warner, John [R-VA]* 05/09/2007
Sen. Biden, Joseph R., Jr. [D-DE]* 05/09/2007
Sen. Rockefeller, John D., IV [D-WV]* 05/09/2007
Sen. Carper, Thomas R. [D-DE]* 05/09/2007
Sen. Webb, Jim [D-VA]* 05/09/2007
Sen. Casey, Robert P., Jr. [D-PA] 05/10/2007
Sen. Specter, Arlen [R-PA] 05/14/2007
Sen. Clinton, Hillary Rodham [D-NY] 06/25/2007