U.S. farm and biofuel organizations are urging the Trump administration to reject a potential expansion of small refinery exemptions, warning the move could reduce demand for corn, soybean oil and renewable fuels. Reuters reports the administration is considering exemptions covering as many as 1.8 billion renewable fuel credits, nearly double earlier assumptions. Small refinery exemptions allow qualifying refineries to avoid some Renewable Fuel Standard blending requirements. The American Soybean Association estimates expanded exemptions could eliminate about 500 million gallons of biomass-based diesel demand and cost soybean farmers roughly $1 billion. A coalition including the Renewable Fuels Association, Growth Energy and National Farmers Union urged President Donald Trump to limit the waivers. Reuters reports administration officials are also considering increasing 2027 biofuel requirements by roughly 500 million gallons to compensate for demand lost through exemptions.