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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Lautenberg, Frank R. [D-NJ]* 03/14/2007
Sen. Mikulski, Barbara A. [D-MD]* 03/14/2007
Sen. Casey, Robert P., Jr. [D-PA]* 03/14/2007
Sen. Durbin, Richard [D-IL] 03/15/2007
Sen. Kerry, John F. [D-MA] 03/15/2007
Sen. Rockefeller, John D., IV [D-WV] 03/19/2007
Sen. Wyden, Ron [D-OR] 03/19/2007