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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Harkin, Tom [D-IA]* 06/24/2008
Sen. Durbin, Richard [D-IL]* 06/24/2008
Sen. Coleman, Norm [R-MN]* 06/24/2008
Sen. McCaskill, Claire [D-MO]* 06/24/2008
Sen. Bond, Christopher S. [R-MO]* 06/24/2008
Sen. Lugar, Richard G. [R-IN]* 06/24/2008
Sen. Bayh, Evan [D-IN]* 06/24/2008
Sen. Klobuchar, Amy [D-MN]* 06/24/2008
Sen. Obama, Barack [D-IL]* 06/24/2008