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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Hatch, Orrin G. [R-UT]* 09/09/2008
Sen. Domenici, Pete V. [R-NM] 09/15/2008
Sen. Boxer, Barbara [D-CA] 09/15/2008
Sen. Biden, Joseph R., Jr. [D-DE] 09/15/2008