Farmers and biofuel groups say they are counting on President Donald Trump to fix a rule proposed last week by the Environmental Protection Agency (EPA) that weakens the Renewable Fuel Standard by failing to fully account for waivers granted to oil refiners.

“Our members are disappointed in EPA’s proposed rule, which if enacted would fall short of promises made to create certainty to the renewable fuels market,” said Iowa Farm Bureau President Craig Hill, a crop and livestock farmer in Warren ...