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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Mikulski, Barbara A. [D-MD]* 05/03/2007
Sen. Durbin, Richard [D-IL]* 05/03/2007
Sen. Stabenow, Debbie [D-MI]* 05/03/2007
Sen. Rockefeller, John D., IV [D-WV]* 05/03/2007
Sen. Levin, Carl [D-MI]* 05/03/2007
Sen. Feinstein, Dianne [D-CA]* 05/03/2007
Sen. Johnson, Tim [D-SD]* 05/03/2007
Sen. Harkin, Tom [D-IA]* 05/03/2007
Sen. Feingold, Russell D. [D-WI]* 05/03/2007
Sen. Leahy, Patrick J. [D-VT]* 05/03/2007
Sen. Kohl, Herb [D-WI]* 05/03/2007
Sen. Kennedy, Edward M. [D-MA]* 05/03/2007
Sen. Whitehouse, Sheldon [D-RI] 07/13/2007
Sen. Sanders, Bernard [I-VT] 09/27/2007
Sen. Brown, Sherrod [D-OH] 10/17/2007