President Donald Trump has said he supports banning diesel exports as the U.S. average price reached $6.51 per gallon, according to GasBuddy. The proposal is dividing Senate Republicans, with Sen. Chuck Grassley and other farm-state lawmakers backing restrictions while oil-state Republicans call the idea a gimmick. Senate Majority Leader John Thune is open to the proposal, but concerns remain that an export ban could tighten regional supplies, reduce refinery runs and distort fuel markets. Diesel prices have risen amid global disruptions linked to attacks on Russian refineries, the war with Iran and the Russia-Ukraine war, increasing pressure on farmers and other voters before the 2026 midterm elections. Rep. Ashley Hinson of Iowa has endorsed pausing diesel exports alongside a gas-tax suspension and looser restrictions on higher-ethanol blends. Administration officials remain divided, with Interior Secretary Doug Burgum questioning whether an export ban would lower prices and Agriculture Secretary Brooke Rollins saying official actions could be announced soon.