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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Wyden, Ron [D-OR]* 06/18/2013
Sen. Murkowski, Lisa [R-AK]* 06/18/2013
Sen. Udall, Tom [D-NM]* 06/18/2013
Sen. Begich, Mark [D-AK]* 06/18/2013
Sen. Merkley, Jeff [D-OR]* 06/18/2013
Sen. Lee, Mike [R-UT]* 06/18/2013
Sen. Durbin, Richard [D-IL] 07/16/2013
Sen. Heinrich, Martin [D-NM] 07/24/2013