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* = Original cosponsor

Cosponsor Date Cosponsored
Sen. Vitter, David [R-LA]* 05/17/2012
Sen. Franken, Al [D-MN]* 05/17/2012
Sen. Shaheen, Jeanne [D-NH]* 05/17/2012
Sen. Kohl, Herb [D-WI]* 05/17/2012
Sen. Udall, Tom [D-NM]* 05/17/2012
Sen. Johnson, Tim [D-SD]* 05/17/2012
Sen. Klobuchar, Amy [D-MN]* 05/17/2012
Sen. Merkley, Jeff [D-OR]* 05/17/2012
Sen. Sanders, Bernard [I-VT]* 05/17/2012
Sen. Brown, Sherrod [D-OH] 05/21/2012