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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 04/04/2011
Sen. Lieberman, Joseph I. [ID-CT]* 04/04/2011
Sen. Levin, Carl [D-MI]* 04/04/2011
Sen. Carper, Thomas R. [D-DE]* 04/04/2011
Sen. Lautenberg, Frank R. [D-NJ]* 04/04/2011
Sen. Coons, Christopher A. [D-DE] 04/14/2011