Fire a few warning shots. If that doesnt work you apprehend them and lock em up and give em bread and water until you capture enough of em to fill up a cargo plane.
Then you fly em to southern mexico and drop em off and send the bill to the mexican government.
I'm curious...just hypothetical.
You have this cargo plane full of illegals and you're going to fly it to Mexico right?
What if the illegals are not from Mexico? Will you make a distinction between Panamanians and Mexicans?
What if the place you're flying too doesn't give you landing permission...what then?