The global oil price means that diesel can't be made for less than a certain cost. If American demand for diesel at that price is less than what refiners can make, then indeed refineries will slow down so as not to lose money.
And a diesel export ban is going to FUCK OVER American allies in Europe and East Asia, which will probably lead to emergency panic dumping of US treasuries.
Trump gonna give a Fell For It Again Aware to ... himself?
