Thanks for the history of California. Essentially, the history is a bit different in California, AZ and NM (which were one province at the time) and Texas. But in all three cases, the Mexican govt had no effective control after 1821.
Maidservant: "Sire, the people illegals are revolting!"
Lois XIV: "I know."
Seriously, let them continue believing in non-historical fantasy lands and that we're all too soft and complacent to defend our sovereignty.
I couldn't devise and implement better PsyOps than they're doing to themselves.