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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Harkin, Tom [D-IA]* 09/29/2010
Sen. Whitehouse, Sheldon [D-RI]* 09/29/2010
Sen. Leahy, Patrick J. [D-VT]* 09/29/2010
Sen. Merkley, Jeff [D-OR]* 09/29/2010
Sen. Nelson, Bill [D-FL] 11/17/2010