What if he sits down at the Resolute Desk and dares someone to physically remove him? What if he occupies a couch in the residence? The harm here is real, beyond how ridiculous the performance would look to the rest of the world: A functional president requires a functioning office.

Former senior government agency heads and Secret Service detail leaders pushed to think through this scenario offered several plausible solutions. “I think I’d have a conversation with the chief of staff, and then the family, Ivanka and the other kids and say, ‘It’s going to be your job to make sure he’s gone,’” a former senior Secret Service official said.

Another possibility: “When the staff leaves on January 19, don’t let them back into the complex the next day. He can’t do anything without his staff.”

An isolated president, in other words, would be more susceptible to just throwing in the towel.