a state-level "war" against illegal immigration

From Nicholas Riccardi in the LA Times (hat tip: C-J)...

As it has become the favorite entry point for undocumented migrants trying to sneak into the United States, Arizona has become a laboratory for whether a state can single-handedly combat illegal immigration.

In recent years it has barred illegal immigrants from receiving government services, from winning punitive damages in lawsuits and from posting bail for serious crimes. A new state law shuts down businesses that hire illegal workers. And the sheriff of Maricopa County, which includes Phoenix and three-fifths of the state's population, dispatches his deputies and volunteer "posses" to search for illegal street vendors or immigrants being smuggled through the county.

"What I love about what Arizona is doing is we don't have to rely on the federal government," said state Rep. Russell Pearce, a Mesa Republican who has authored most of the toughest measures. "It has truly woken up the rest of America that states can fix that problem."

The campaign has had an effect: Illegal immigrants complain it's impossible to find good work and are leaving the state....

The law is fairly straightforward. Any business caught hiring illegal immigrants is put on probation. If it is caught doing the same thing again, the state revokes its business license.

The only defense for an employer is if it used E-Verify, a federal pilot project to allow businesses to confirm the legality of their laborers....

E-Verify has at least one significant flaw -- its treatment of naturalized U.S. citizens.

Between October 2006 and March 2007, about 3,200 foreign-born U.S. citizens were initially improperly disqualified from working by E-Verify. Their status was later corrected. Because many did not register their citizenship with the Social Security Administration, they are often listed as possible illegal workers....