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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Cardin, Benjamin L. [D-MD]* 01/12/2007
Sen. Mikulski, Barbara A. [D-MD]* 01/12/2007
Sen. Webb, Jim [D-VA]* 01/12/2007
Sen. Casey, Robert P., Jr. [D-PA]* 01/12/2007
Sen. Rockefeller, John D., IV [D-WV]* 01/12/2007
Sen. Specter, Arlen [R-PA] 08/02/2007