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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Rubio, Marco [R-FL]* 03/21/2013
Sen. Begich, Mark [D-AK]* 03/21/2013
Sen. Nelson, Bill [D-FL] 03/22/2013
Sen. Schatz, Brian [D-HI] 03/22/2013
Sen. Merkley, Jeff [D-OR] 03/22/2013
Sen. Wyden, Ron [D-OR] 03/22/2013
Sen. Warren, Elizabeth [D-MA] 03/22/2013
Sen. Hirono, Mazie K. [D-HI] 03/22/2013
Sen. Lautenberg, Frank R. [D-NJ] 03/22/2013
Sen. Schumer, Charles E. [D-NY] 03/22/2013
Sen. Cowan, William M. [D-MA] 03/22/2013