In the novel, the President wanted to do it quietly without the public knowing. I say, openly go after with Trump making a prime time address announcing that he’s doing it.
In the open is better. Still, what percentage of the 30 million undocumented voters in this country would turn saboteur?
How many saudis did it take to level the world trade center? 14 or 15 was it? What could 300,000 Mexican nationals do?
Plata o plomo? Trump has all the plata any man could want, in the event of a declared war they will do everything they can to give him enough plomo to last the rest of his life.
I submit subtle approach might be better.