Stroke of the pen, law of the land. Kinda cool.
Of course, that may not work if there were an opposition party.
It’s not really money, either. Most of the increases in employment have been in government service jobs. So they are paying themselves, with the fiat money that we gave them, which means they think they always can just print the money.
There was definitely an opposition party when President Trump attempted executive orders. IIRC the instant he tried to do just about anything Pelosi or Schumer and a gaggle of other Dems were being interviewed by the media wing of the party. Then a lawsuit was filed. Trump usually got what he wanted in the end, but after a lot of time and effort and stays of his actions by a court.