“What????????? You are willfully blind, then.”
Back up what you say. Google it. Post any petition, money raising, or organizing effort that proposes that any state secede from the Union and rejoin Mexico.
Mexican citizens are free to repatriate to Mexico at any time for free. Bottom line, Mexicans are far better off in the US and aren’t going back in any significant numbers, except by force.
Clearly, you haven’t been paying attention. At all
You should Google both ‘Aztlan’ and ‘La Voz de Aztlan’ and find out just what the Mexican colonists have in mind for the US Southwest.