Ah, those crazy Californians, they just kind of make up the law as they go along:
Setting up a potential showdown with the mayor, the San Francisco Board of Supervisors reinstated an ordinance on Tuesday requiring that juvenile offenders who are illegal immigrants be convicted of a crime before they are turned over to the federal immigration authorities.
[. . .]
Mr. Newsom says he still strongly supports the sanctuary policy, which he says helps law enforcement by making immigrants comfortable approaching police officers about crimes. But immigration advocates complain that turning over juveniles at the time of arrest, rather than conviction, resulted in some youths being deported on unfounded charges.
Being here illegally is a crime, ya nitwits. Check out the U.S. Code, Title 1325, Section 8. But we probably shouldn't be too hard on the San Francisco supervisors, since even Homeland Security Secretary Janet Napolitano doesn't seem clear on the whole illegal immigration concept:
And yes, when we find illegal workers, yes, appropriate action, some of which is criminal, most of that is civil, because crossing the border is not a crime per se. It is civil. But anyway, going after those as well.
Yes it is. Per se.