The growing national discomfort over illegal immigration more than four years after “Mexifornia” first appeared in City Journal is not only apparent in the rightward shift of the debate but also in the absence of any new arguments for open borders—while the old arguments, Americans are finally concluding, really do erode the law, reward the cynical here and abroad, and needlessly divide Americans along class, political, and ethnic lines.

That’s the conclusion. Read the whole thing.