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* = Original cosponsor

CosponsorDate Cosponsored
Sen. Lugar, Richard G. [R-IN]* 01/04/2007
Sen. Dorgan, Byron L. [D-ND]* 01/04/2007
Sen. Biden, Joseph R., Jr. [D-DE]* 01/04/2007
Sen. Obama, Barack [D-IL]* 01/04/2007
Sen. Johnson, Tim [D-SD] 02/27/2007
Sen. Salazar, Ken [D-CO] 02/27/2007