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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. McCaskill, Claire [D-MO]* 06/09/2011
Sen. Grassley, Chuck [R-IA]* 06/09/2011
Sen. Hagan, Kay R. [D-NC]* 06/09/2011
Sen. Collins, Susan M. [R-ME]* 06/09/2011
Sen. Merkley, Jeff [D-OR]* 06/09/2011
Sen. Enzi, Michael B. [R-WY]* 06/09/2011