If you read up on the history of the Chiracahua Apache's (Gerinimo's clan), you realize Gerinomo hated the Mexicans even more than the Anglos, they killed off his first wife and kids. The Apaches spent 200 years fending off the Spanish and then the Mexicans.
Yup, there was a reason they didn't come north of the border. When California became a State, there were but 2,000 Spanish speaking people here, who almost unanimously considered themselves Spanish, not wanting anything to do with what they perceived a bunch of traitorous hooligans to the South. They fought Mexican authority along with Americans, settled their accounts and property claims in courts, and we all went on from there. There were a few instances in which some got screwed, but not many.
These Central American mestizos and Indians we're seeing now have no more historic claim to America than the Chinese. Mexico possessed a claim they abrogated for 27 years. My family has been here for over a century and helped build California into what they want to take. I want them out.