There is one thing this orange demon gibbon could do, and OFAC knows it: make it illegal to bunker these ships. Wilbur Ross was the shit monkey's Sec Tres for a while, and he was a major ship owner and taught OFAC how it works.
It's a nuclear option though, and nobody actually, really, wants to cut off this much oil from the world's supply. That would cause inflation even worse than the dickcheese asshole's deportation plans. So, I'm betting it won't happen.
What will happen is he will give Israel permission to go full warfare with Iran.
Bold of you to assume there will be free and fair elections in four years.