The U.S. Environmental Protection Agency has proposed cutting renewable diesel credits for fuels made with imported feedstocks, sparking strong opposition from oil majors. ExxonMobil, Chevron, and independent producers like Diamond Green Diesel argue the plan would disrupt supply chains and penalize facilities built specifically to process imported waste oils and fats. They warn it would raise costs and undermine existing investments, leaving coastal refineries at a disadvantage. In contrast, U.S. farmers and oilseed processors support the measure, hoping it boosts domestic soybean oil demand. A final decision on blending obligations for 2026–2027 is expected by the end of October.