I’ve only heard bits and pieces of this from friends and strangers through some specific events so far and desire to know more about it, at least that which is publicly witnessed or documented. I just mean to learn this for educational and entertainment purposes because I am genuinely intrigued with the logistics behind making these operations possible like the other topics that have been covered by Wendover Productions.
They’d be limited by things like private property rights or a person’s right to life and freedom, but other than that I wouldn’t assume their powers are limited in any public place. The president has inherent power to do certain things (like maintain the army) that isn’t derived from congress, and it’s fair enough to conclude that maintaining the president’s personal safety is necessary for him to be able to execute presidential functions.