>>When your main export is your citizens, your nation is in big trouble.<<
We will be expected to be the compassionate nation who will feed, cloth, educate and medicate our neighbor to the South.
The answer would have been to build businesses in Mexico decades ago to give them jobs and help their economy. Many companies did for awhile but then went East when the Chinese and other Asians figured out how to produce goods of reasonable quality (if you don't mind planned obsolescence) and pay people even less than they paid Mexicans.
Certainly, they need work, they need money. Why don't they have them in Mexico? How can that be helped? Apparently, Mexican millionaires are among the most evil pronks on the planet, because they don't do much to build a middle class in that country. They're just as bad as the Saudis. Capitalism doesn't work when those at the top hog everything for themselves.