There goes the phraze "Remember the Alamo"
There were generations of Mexican families residing in Texas before it was colonized. One reason groups of Americans were allowed in and given land grants was to provide a buffer between the Commanches and those original Mexicans.
The Texas towns of Sequin and Navarro are named after two of those Mexican defenders of the Alamo.
It is wrong to assume that all Texas hispanics are pro illegal immigration. Many are quite conservative.