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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Nelson, Ben [D-NE]* 01/31/2007
Sen. Collins, Susan M. [R-ME]* 01/31/2007
Sen. Levin, Carl [D-MI]* 01/31/2007
Sen. Snowe, Olympia J. [R-ME]* 01/31/2007
Sen. Biden, Joseph R., Jr. [D-DE] 02/01/2007
Sen. Hagel, Chuck [R-NE] 02/01/2007
Sen. Salazar, Ken [D-CO] 02/01/2007
Sen. Wyden, Ron [D-OR] 02/05/2007
Sen. Bayh, Evan [D-IN] 02/05/2007
Sen. McCaskill, Claire [D-MO] 02/05/2007
Sen. Smith, Gordon H. [R-OR] 02/05/2007
Sen. Landrieu, Mary L. [D-LA] 02/05/2007
Sen. Nelson, Bill [D-FL] 02/05/2007
Sen. Voinovich, George V. [R-OH] 02/16/2007