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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 02/14/2012
Sen. Rockefeller, John D., IV [D-WV]* 02/14/2012
Sen. Feinstein, Dianne [D-CA]* 02/14/2012
Sen. Whitehouse, Sheldon [D-RI] 02/15/2012