I respectfully disagree. The plan was to make one ginormous country of Canada/USA/Mexico/Central America. It was to allow masses of illegals to come into America and change the culture and identity of the USA first and the rest of the continent after.
It would serve to destroy the middle class, statism, boundaries, and cultural lines so our continent can compete economically and militarily with Asia (China) and Europe.
That too. However, the illegals Mexicans (only) are coming with a pre-conceived idea that we stole their land. I'm not talking about what the Government has planned. I'm talking about the Mechistas, like Villaraigosa, and the Brown Berets, and the illegals who arrogantly fly their Mexican flag in the faces of those they depend on for tax subsidies. They teach revisionist History to their students in Mexico. They demand that their Mexican History take precedence in So. Calif. schools. They are not interested in even the bigger picture you state in your post. They just want control; house by house, block by block. Control based on hate for the "gringo."