Nathan Thornburgh reports on what might have been:
Sure, there is a very real national-security threat in having a porous border. But a large — if unquantifiable — percentage of the people crossing that line illegally are not newcomers but rather people who have already established lives in the U.S. and would qualify for amnesty. If they were legalized and free to circulate, we could concentrate on the serious criminals and terrorists crossing the border, not a worker going back to his family.