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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Lieberman, Joseph I. [ID-CT]* 04/30/2009
Sen. Collins, Susan M. [R-ME]* 04/30/2009
Sen. Carper, Thomas R. [D-DE] 05/19/2009
Sen. Begich, Mark [D-AK] 07/20/2009