NEW : Supporters of resolution argue EPA has the proper authority . Politics : Opponents argue that resolution puts politics ahead of real science . Senate to vote Thursday on resolution limiting EPA 's authority to regulate greenhouse gases . `` The Murkowski resolution gives the United States Senate a choice between real science and political science , '' said Sen. Richard Durbin , D-Illinois . Measure needs 51 votes to pass .
NEW : Supporters of resolution argue EPA has the proper authority . Politics : Opponents argue that resolution puts politics ahead of real science . Senate to vote Thursday on resolution limiting EPA 's authority to regulate greenhouse gases . Measure needs 51 votes to pass .