I once had an assignment at AID to get the AID GS employees to stop using punch cards (it was 1979) for their computer code. The bosses wanted them to use terminals, but the government programmers wouldn't trust them. They trusted cards they could hold in their hands. Really.
The solution? Take away all the furniture they used to store the cards. That made the programmers give up and start using terminals to write code.
Maybe Mr. Trump could take away all the employees desks and chairs. Eventually they'll get tired and go away.