Likely, without something drastic occurring to stop it. The mexicans aren't going to be satisfied with their taking of the Southwest. Look across the country and see they're populating areas everywhere. They want the WHOLE thing, but our politicians are too afraid to speak against illegal aliens... they've become a "third rail."
Parts of our country already are mexicamerica. Visited Los Angeles “My Home Town” lately? Also: Southern New Mexico, Southern Arizona, El Paso, Laredo and ESPECIALLY the entire Lower Rio Grande Valley have been colonized, conquered and taken over by Mexico. They are crap holes. All display the same social pathology as Mexico does, poverty, crime, government and judicial corruption, incompetence, tottering Rule of Law, disintegrating infrastructure, horrible schools, high percentage of dependent and therefore easily manipulated people. Parts of Illinois, New Jersey and Georgia are on their way.