VDH, in City Journal. A quote: 
Fast-forward nearly five years, and the national climate has radically changed, so much so that the arguments of Mexifornia—close the borders, return to the melting pot, offer earned citizenship to most aliens of long residence in exchange for acceptance of English and American culture—seem tame today, if not passé. In 2002, when I wrote the original City Journal essay, no one thought that the U.S. Congress would vote to erect a wall. Today there is rumbling that the signed legislation entails only 700 miles of fencing instead of spanning the entire 1,950-mile border.
Deportation was once an unimaginable response to the problem of the 11 million here illegally. Now its practicality, rather than its morality, appears the keener point of contention. And the concerted effort by Chicano activists to drive from popular parlance the descriptive term “illegal alien” in favor of the politically correct, but imprecise and often misleading “undocumented worker” has largely failed. Similar efforts to demonize opponents of open borders as “anti-immigrant” or “nativist” have had only a marginal effect in stifling debate, as has the deliberate effort to blur illegal and legal immigration. The old utopian talk of a new borderless zone of dual cultures, spreading on both sides of a disappearing boundary, has given way to a reexamination of NAFTA and its facilitation of greater cross-border flows of goods, services—and illegal aliens and drugs.
So why has the controversy over illegal immigration moved so markedly to the right?
One question for VDH: Why is this "to the right"? I do not understand how "left" and "right" apply to illegal immigration. "Illegal" is not a matter of opinion. The law is not complicated on this subject.