Based on some anecdotal evidence, Arizona's new immigration-enforcement law seems to be increasing the wages of some as the "undocumented" leave the state:

Two out of three men who apply at Ironco, a construction firm that specialises in buildings and parking garages made with heavy steel, are Hispanic or foreign-born Hispanic, the company said.

Ironco has raised steel fitters' wages 30 percent from a year ago, according to Bailey. "We've raised wages, competing for a diminishing supply (of workers)," he said. "We?ve been on a campaign of quality improvement, training, scouring the waterfront, so to speak, for American vets, ex-offenders trying to find their way back into society."

So it seems as though, with this increased scrutiny, Ironco has turned its attention to US veterans and those with a criminal record and engaging in investment in developing the skills of individuals.
(H/T: Mark Krikorian)