Perhaps President Trump should keep in mind that the President can (apparently) sign any treaty all by himself, and then the US is stuck with whatever deal the guy in the White House wanted.
This is the sort of power approach that can be used to drain the swamp. Just swing for the fences. Get it done. Who will stop you? And if they try to stop you, just put them in jail.
Doesn’t a treaty have to be ratified by the Senate?