The US Constitution does not allow a treaty to be enforced unless the Senate ratifies it. The rest of the world operates on the signature of the leader concept. Customary international law” does not trump the Constitutional requirement of Senate ratification.
You realize of course that the rest of the world doesn’t give a damn about the US Constitution,
as indeed most of our political rulers don’t either.
-fJRoberts-
Please, read the article. We're so far outside what the Constitution says, that to admonish me so is just callow.
We are now operating according to the Vienna Convention on the Law of Treaties, effectively a treaty about treaties. And guess what? It was never ratified, but the government has been ignoring that little complication since the 1970s.