what power does the SC have to stop him?
That's the main flaw with the Constitution. It assumes that the President is not an abjectly stupid, ignorant, selfish, greedy, tantrum-throwing lunatic, so it lets them do pretty much whatever they want.
Took a long time for one to come along, but he's here mow.
I think BC starts shipping LNG later this year. That project has been in the works for about 10 years now.