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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Chambliss, Saxby [R-GA]* 02/28/2013
Sen. Murphy, Christopher S. [D-CT]* 02/28/2013
Sen. Vitter, David [R-LA]* 02/28/2013
Sen. Menendez, Robert [D-NJ]* 02/28/2013
Sen. Udall, Tom [D-NM]* 02/28/2013
Sen. Heinrich, Martin [D-NM]* 02/28/2013
Sen. Lautenberg, Frank R. [D-NJ]* 02/28/2013
Sen. Warren, Elizabeth [D-MA]* 02/28/2013
Sen. Hirono, Mazie K. [D-HI]* 02/28/2013
Sen. Isakson, Johnny [R-GA]* 02/28/2013
Sen. Nelson, Bill [D-FL]* 02/28/2013
Sen. Blumenthal, Richard [D-CT]* 02/28/2013
Sen. Cowan, William M. [D-MA]* 02/28/2013
Sen. Markey, Edward J. [D-MA] 09/09/2013