Supreme Court with 4 justices plus Roberts and Kennedy will be clear that the executive order is beyond unconstitutional and Border Patrol Agents/Trump are being treasonous/endangering National Security through refusal to cooperate with court injunctions.
The military will not listen to a treasonous commander in chief corrupted by corporatism, narcissism, and Russia.
That will provide ammunition for impeachment and conviction in the near future.
This is not going to end well for Donald Trump and his cronies. This is going to backfire terribly.