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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Udall, Mark [D-CO]* 12/18/2012
Sen. Udall, Tom [D-NM]* 12/18/2012
Sen. Wyden, Ron [D-OR]* 12/18/2012
Sen. Baucus, Max [D-MT]* 12/18/2012
Sen. Johnson, Tim [D-SD]* 12/18/2012
Sen. Feinstein, Dianne [D-CA] 12/21/2012