The Gulf of Mexico oil spill is adding to pressure on the Environmental Protection Agency to decide whether to raise the ethanol blend limit in gasoline from 10% to 15%, writes blogger Geoff Styles. If the EPA decides against the increase, the country's long-term renewable-fuels strategy would be put into question, he notes. But granting the request, either as a favor to the ethanol industry or as a hasty response to the oil spill, could be a mistake with serious repercussions, Styles adds.

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