Yes, we know. The best of us are prone to sophistry, when a strong desire--like a belief in man's natural equality and infinite malleability--contradicts an obvious truth.
Our immigration policies have indulged fantasies about the nature of man, and the United States and the rest of Western civilization will forever and permanently reap the results. OK? Satisfied?
There is no undoing what has been done. Now, let's get back to life and politics. Harping on this subject is no help to us whatsoever.