The guy is an idiot who, like a lib, cannot be engaged in a debate.
If it was me, I would consider it a declaration of war that a country would flood my country with its own citizens or refuse to take them back.
I would defeat them decisively and then install a dictator to control them, just like MacArthur did to Japan. It made them a better place.
Mexican culture and Japanese culture are very different. I don’t know what would work down there. Are our methods interchangeable across nations? I doubt it.