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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 07/31/2008
Sen. Lieberman, Joseph I. [ID-CT]* 07/31/2008
Sen. Murkowski, Lisa [R-AK] 09/09/2008
Sen. Dole, Elizabeth [R-NC] 09/10/2008