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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Merkley, Jeff [D-OR]* 07/22/2010
Sen. Gillibrand, Kirsten E. [D-NY]* 07/22/2010
Sen. Begich, Mark [D-AK]* 07/22/2010
Sen. Bennet, Michael F. [D-CO] 07/27/2010
Sen. Udall, Mark [D-CO] 08/02/2010
Sen. Shaheen, Jeanne [D-NH] 11/17/2010