(They're commenting on "The Hispanic Challenge," a recent article by Samuel Huntington in Foreign Policy Magazine.)
On a slightly more serious note, immigration tends to get my libertarian grove-thing on: I like the idea of people wanting to work going to where there is work. I like the idea of free movement of people, goods, and ideas. If we end up a bilingual people in twenty years as a result, all the better! 'Course, I'd probably feel different if I wasn't in a non-exportable, well-paid service job with significant entry barriers . . . .
(No time for careful analysis and reasoned debate this afternoon. Consider this an open thread.)