Colbert’s target, judging from the portions of the testimony I heard, seemed to be those who are anti-immigrant — which, in this country, is that faction best represented by trade isolationists like Pat Buchanan and, oh, say John Kerry and the host of Democrats who, like Buchanan, speak in code words about the evils of “outsourcing.” Whereas Colbert didn’t really address at all the issue of anti-illegal immigration as it