So why can’t he go to Mexico and be a successful tech consultant in a country where he doesn’t have to worry about getting deported?
All of these “Dreamers” are really very fortunate Mexicans (or Guatamalans or whatever), rather than the very unfortunate Americans they take themselves to be.
They should have great advantages in returning to their home countries, and working or setting up a business from there, that their compatriots who weren’t smuggled into the US don’t have.