The big boys got together and decided this would solve Latin America's instability problems, prevent communism from rearing its ugly head again, etc. America needed more workers to shore up Social Security, business loves cheap labor. What's not to like? That they took great pains not to clue in the general dumb public until it was in their words, too late to send the many millions back, tells us they knew perfectly well what the reaction would be. How does it feel to be considered a nation of dopes? Members of both parties are involved with this. (See Clinton and The Third Way.)