EO and a deal with the UN which will not be submitted as a treaty. He will just start enforcing it on the US economy with EPA regulations as with the UN Agenda 21 which is binding law nationwide and has never been submitted as a treaty but rather implemented as EPA and HUD regulations. We live now in a split dictatorship - EPA/President. It will be an EPA dictatorship with a weak president and a Presidential dictatorship with a strong President. EOs are not necessary, just the EPA.
We really, really, really need huge amounts of people and companies to say “F you” and do what they think is right.
Congress has largely made itself irrelevant. Their main job is to cash lobbyist checks.