As I've mentioned before, if Trump does this then he will depopulate Trump Tower. The people who can afford to live there are not the kind of people who will put up with having to jump through the security hoops, the streets around the building being shut down, and be faced with the demonstrators 24x7. All the retail establishments in the lobby will almost certainly go out of business as the walk-in traffic is cut off by the security screenings. He will likely kill off the crown jewel of his real estate empire and I don't think he wants to do that.
You live in Missouri. What do you know?