Change the United States of America name...
There is one problem behind your philosophy. Mexico will be Mexico and the US the US. We would plinge into civil war before Mexico could take over the US or any of its states. And beside that the oriental, black, white races outnumber the Latinos 500 to 1. This is a country or diverse races, and that most likely wont change. Even if you integrate strong Latino values into America there are still really strong Oriental, Irish, German, African, Russian, Swedish, Sacndinavian, English, Indian, and many other cultures that influences America. So please don't think this will change unless you want a civil war you probably wont win and possibly banned back to Mexico.