[stetrain]

I think “unlawfully assume extraordinary powers” may apply.

It’s certainly debatable, but shutting down agencies created and authorized by Congress and refusing to distribute funding legislated by Congress seems to be an overstep of executive power, and therefore an undermining of Congress’s power.

My main point was that ousting an incumbent or defying an election is not a requirement for something to be a coup, as the previous comment was suggesting. A legitimately elected official seizing more power than they are legally entitled to is a form of coup.

[invalidOrTaken]

There is certainly a transfer of power going on, but whether that's unlawful will be for the courts to decide.

[stetrain]

I’m not sure a court ruling is a requirement for something to be called a coup.

[invalidOrTaken]

anyone can call anything anything, sure(is it a "coup" when I paint a good painting, or win a game of chess? https://www.thefreedictionary.com/coup), but the great-grandparent comment referred to a "bizarre and highly illegal" coup.