From a story on Irish illegal aliens leaving New York: “Some immigrants, longtime illegal residents losing hope for legal status, say they are being driven out by new security crackdowns that make it harder for those without a valid Social Security number to drive, work or plan a future in the United States.” With the president yammering on about the need for a “guestworker” amnesty, we’re not going to see as much attrition in the near future as we should, but the fact remains that it works. Squeezing the illegal population — Irish or otherwise — until a significant number deport themselves has got to be the first step in any effort to regain control of the borders.