Well, enforcement theater is OK if it's reality theater. In other words, obviously, you want to make it clear, you want to make people see that the law is being enforced.

Of 472 civilian occupations defined by the Department of Commerce, only six are majority immigrant (legal and illegal). These six occupations account for 1 percent of the total U.S. workforce. Many jobs often thought to be overwhelmingly done by immigrants are in fact majority native-born: 51 percent of maids are U.S.-born, as are 63 percent of butchers and meat processors, and 73 percent of janitors.

And they are much more skeptical of the very idea of having immigration limits, whereas the public - again, independents and Democrats, as well as Republicans, although not necessarily all in the same proportions - have a much stronger sense of the American government and American law having responsibility to Americans specifically rather than to people around the world. So the polarization is up versus down, not really right versus left.

In enforcement, you always have to have both a focus on the really worst actors - you know, gang bangers, in this case, drug dealers, that sort of thing - but also routine enforcement because think about, for instance, the IRS. They don't say, OK, well, if you're not a money launderer, it doesn't matter whether you fill your tax return out right or not. They have both. They go after the really bad actors and they have a kind of general, routine enforcement.

Well, because we're talking here about people who've been ordered deported and the administration has done nothing about actually making sure that they go home. This is theater, I think, for two audiences - one probably for the American public to some degree, to make it seem as though the administration is taking this renewed surge of Central Americans seriously.

Well, enforcement theater is OK if it's reality theater. In other words, obviously, you want to make it clear, you want to make people see that the law is being enforced.

The effects of illegal immigration aren't that different from those of legal immigration —an illiterate Central American farmer with a green card is just as unsuited for a 21st-century economy as an illiterate Central American farmer without a green card.