If this does happen, it will be a “Matis Strategy” for what is done. As non-military folks, most of us don’t know what kind of a strategy he would employ on this. It will be interesting to watch.
Realistically, there ain't gonna be no shooting. No water cannons, nor any ADS heat rays. Probably the best that can be hoped for is that they all get corralled into a big holding area and shipped off to a tent city, which would have a landing strip adjacent to it.
Process them, get their fingerprints, put some sort of tag on them that identifies them as invaders, tell them a second offense will get them sent to prison, and load them up on the cargo planes and fly their butts home, women and children first.
I wouldn't bet on that, though.