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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Lieberman, Joseph I. [ID-CT]* 09/18/2007
Sen. Lincoln, Blanche L. [D-AR]* 09/18/2007
Sen. Dodd, Christopher J. [D-CT]* 09/18/2007
Sen. Obama, Barack [D-IL]* 09/18/2007
Sen. Collins, Susan M. [R-ME] 09/24/2007
Sen. Snowe, Olympia J. [R-ME] 02/04/2008
Sen. Sanders, Bernard [I-VT] 03/04/2008