Here's an excerpt from a July 20, 1982 column from Mexican newspaper Excelsior. Of course, this is just one reconquista's opinion, but it no doubt reflects how much of the elite of Mexico thinks:

Los Angeles, California. This is the second largest Mexican city in the world for the number of our compatriots settled there, and it must have as many Spanish-speakers as Madrid. The Anglo-Saxons are still the most numerous and there are a lot of Negroes, but the numerical advance of Mexicans is astonishing. Ten movie houses at once show the Cantinflas comedy "El Barrendero." On the streets one has the impression of a great Mexican city. "La Opinion," with a circulation of 60,000 copies, is one of three daily newspapers in Spanish in this enormous country. When did the Mexicanization of Los Angeles happen?

...They have marked social and family characteristics, agility for adapting to the environment and for conquering a great region, once primitive and virgin, that belonged to our fatherland, and we lost it. But it seems to be slowly returning to the jurisdiction of Mexico without the firing of a single shot, nor requiring the least diplomatic action, by means of a steady, spontaneous, and uninterrupted occupation...

...The U.S. upper classes in the western states live in increasing splendor. Their apogee of luxury and comfort doubtlessly marks the inevitable beginning of their decadence. The Mexican invasion continues...

The territory lost in the 19th century... seems to be restoring itself through a humble people who go on settling various zones that once were ours on the old maps...