If Somalia suddenly decides to not allow repatriation of illegals from America, what happens to them? Will they be brought back to America or will the planes travel to an alternative country and dump the illegals off there?
My guess is President Trump would call up the Iatollah and tell him either take the illegals or we will bomb your country into a pile of rubble.
Open the cargo doors and drop the load; preferably right into the city centers. They'll get the message very quickly. It'll come down like rain.
Civil societies were maintained by much more ruthless means in the past. You keep fucking around with half ass measures and the problem is never solved.