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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Udall, Mark [D-CO]* 04/06/2011
Sen. Bennet, Michael F. [D-CO]* 04/06/2011
Sen. Cardin, Benjamin L. [D-MD]* 04/06/2011
Sen. Kerry, John F. [D-MA]* 04/06/2011
Sen. Menendez, Robert [D-NJ]* 04/06/2011
Sen. Merkley, Jeff [D-OR]* 04/06/2011
Sen. Sanders, Bernard [I-VT]* 04/06/2011
Sen. Whitehouse, Sheldon [D-RI]* 04/06/2011
Sen. Klobuchar, Amy [D-MN]* 04/06/2011
Sen. Durbin, Richard [D-IL] 06/06/2011
Sen. Lautenberg, Frank R. [D-NJ] 10/05/2011