I've mentioned this before, for most every California police dept it is strictly against policy to assist in any immigration issue.
The INS raided a "slave" house, we stood down a block away so as not to even give the impression we were assisting in any way.
LAPD as well as Santa Monica PD have unwritten policies to turn a blind eye to minor infractions by "migrant workers"... things we'd call quality of life issues like urinating/drinking in public.
Why?, because most of the time they have no address or offer generic names like "Jose Lopez" and its a waste of resources for such minor things... thats the excuse anyway.
Santa Monica has an exploding homeless population for just this reason. The migrants, esp around here in North Hollywood, are BOLD mofos who will look you in the eye and piss on your flowers as they drink a beer.... they know LAPD either wont bother showing up, or just herd them along to the next block to become someone elses problem.
Thanks to years and years of the so called nut less "leaders" shaping policing policies that let these people walk around with near impunity, they have been emboldened to scream from the building tops "I'm illegal, you OWE me, and F your US laws" while waiving the Mexican Flag.
If you research some of these groups, which it was my job to do for a short while, you'll find most all of the Mexican centric ones have an agenda to return Texas and parts of California to Mexico, an unconditional opening of the border... things like that.... yet our politicians take them seriously.
You'd also be shocked, or not, to find out where they get some of their political donations from: So American drug cartels, MS13, various radical, even "narco terrorist" organizations who would absolutely love to see their "mules" gain easier access to the US.
I have accepted long ago immigration issues related to Mexico et al are a complete joke, its turned places like Los Angeles into "home plate"... if you can run around the bases and break enough laws to slide home, the LA leaders yell "SAFE!" like an umprie, pat you on the back and look the other way.
Meanwhile by friend Jim from Canada waited 8 years, paid thousands in lawyer fees and jumped through 100 hoops to become a US citizen.