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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Kohl, Herb [D-WI]* 04/09/2008
Sen. Feingold, Russell D. [D-WI] 06/11/2008
Sen. Leahy, Patrick J. [D-VT] 06/11/2008
Sen. Durbin, Richard [D-IL] 07/10/2008