I may be wrong, but I was under the impression that the "borrowing" of these licenses in CA was extensive?
In this area it seems standard operating procedure to hire gangs of illegals under some "Jefe". They follow their employer's orders without question and then of course the the employer gets to blame any problems (when caught) on them after they are long gone, usually citing communication problems.
My mother's neighbor has extensive real estate all over the county and I'm sure has built his empire with this type of labor as he still prefers to hire those lacking in English language skills and no contractors license.