Bipartisan Group of Farm State Senators tell EPA to Stop Giving Big Oil Refiners a Pass on Biofuels Rules

Bipartisan senators on Tuesday asked the EPA to stop issuing waivers that allow oil refiners to avoid obligations to blend biofuels into gasoline.

EPA has reportedly issued 25 of the "hardship" waivers, usually reserved for small, distressed refiners who cannot meet federal biofuel blending requirements.

The senators pressed EPA to provide justification for why the agency has allowed an unusual number of large, profitable refiners to sidestep the biofuels mandate.

By Tom DiChristopher, CNBC News.