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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Vitter, David [R-LA]* 06/30/2011
Sen. Lieberman, Joseph I. [ID-CT]* 06/30/2011
Sen. Cardin, Benjamin L. [D-MD]* 06/30/2011
Sen. Brown, Scott P. [R-MA] 07/07/2011
Sen. Kerry, John F. [D-MA] 07/13/2011