It is a conquest. The Mexican virtually controls California government; the legislature, judiciary and executive(police). It is only a matter of time until the Mexican flag is raised over California public buildings and Mexican sovereignty is formally declared.
I was in Los Angeles last week. It is not even a part of the United States. Except for a few enclaves inland, and a handful of the swanky places on the coast between San Francisco and Santa Barbara, California has all but been conquered.