If the Supreme Court rules against the Executive, they might order an agency to comply with a ruling or - barring that - hold an agency head in contempt. Under this EO, the agency wouldn't comply, since the agency would assume Trump's read of the law is correct - superceding even the Court's. If they tried to enforce a contempt order, the US Marshals would not comply either. Soldiers that swear allegiance to the Constitution would also have to defer to the President, even if the Supreme Court ordered the military not to obey an unconstitutional order.
The problem is the EO commands absolute subservience to the President's view of the Constitution, which makes it impossible for them to comply with Court orders.
> Under this EO, the agency wouldn't comply, since the agency would assume Trump's read of the law is correct - superceding even the Court's. If they tried to enforce a contempt order, the US Marshals would not comply either.
Why? The Marshals enforce blatantly wrong court judgements all the time. Court judgements are court judgements, contempt orders are contempt orders, both can say almost anything. There's no interpreting the law part of enforcing a judgement or order - the court judgement is just as valid whether it's legally correct or not.
Right, court orders are enforced by the executive branch. Conventionally court interpretations of the law are definitive and the executive branch enforces them.
This order tells executive branch employees, including the police and court officers, that they are required to follow POTUS interpretations over all others. Implicitly that includes over court interpretations.