Can he even pull her security? I would think that Congress would be involved in this magnitude of a decision.

Don’t forget, he’s like a king who does whatever he wants. When congressional approval is necessary, he simply pressures republican reps and senators, who then typically pass whatever he wants.

True, but I have to imagine that a handful of republicans would not be ok with this.

I’m sure there are more than a handful that are not ok with this in private, but standing up to trump or voting against his agenda is another story.