In sum, the insistence by impassioned theorists that illegal immigration south of the border is the pre-eminent problem of our time makes perfect sense — or would, had those been Salvadoreans piloting airplanes on 9/11, Guatemalans bankrolling their efforts, Hondurans plotting attacks on the subways and government buildings of Europe, and Mexicans across the global labor diaspora plotting how to bring down the American government, presumably by poisoning our gardens and toilets. If you do not think that is the way it went down, then Occam's razor dictates this: The sheer volume of emotion on the subject of illegal aliens...