Make an example of Kevin De Leon( The De is not part of his legal name, he set to to sound more ethnic) the president of the CA state senate who admits his family is illegal. And clean out the vipers nest in LA and the other cities will fall in line.
I also think that some great object lessons will put an end to this sort of thing quickly.
I might go for a Sanctuary City outside of California to get the kinks worked out, then blanket the state of California with major indictments, perhaps even organized crime.
These people are networking to facilitate this stuff. They know the law better than anyone else. It’s a conspiracy.