Marathon Petroleum (MPC) Faces Fresh Uncertainty After Trump Backs Diesel Export Ban

Marathon Petroleum (NYSE:MPC) faced fresh policy risk after Donald Trump backed a possible US diesel export ban in recent remarks. The former president said he supports restricting US diesel shipments abroad, raising questions for domestic refiners that sell into global markets. Such a ban could pressure refining economics by limiting diesel outlets, which are a key revenue stream for large US refineries. The diesel export ban support from Trump is only one piece of the wider Marathon...