Offensively impeachable.

“Ultimately, acting White House chief of staff Mick Mulvaney seemed to have been able to talk the President out of closing the port of El Paso […] After the President left the room, agents sought further advice from their leaders, who told them they were not giving them that direction and if they did what the President said they would take on personal liability […] ‘He just wants to separate families,’ said a senior administration official […] ‘At the end of the day,’ a senior administration official said, ‘the President refuses to understand that the Department of Homeland Security is constrained by the laws’.” —And this, more than the election interference and the emoluments and the graft and the et cetera (though those too!) but THIS, this nightmare is why he has to go, and go now.