Mexicans who are here legally or otherwise will eventually blend in with an already mixed up population.
At least 90 to 100 million american citizens are not white race folks.
The problem we have, among many others ,is that the mexican immigrant who settles in the southwest or anywhere that was once Mexican territory
doesn't understand or feel that he has entered someone else's country.
He may know intellectually, since he had to cross an international border , but not emotionally or even in a legal sense ,since he believes he has a right to the land or territory that was once part of mexico.
Mexicans living in these american states do not assimilate as well as those living in montana for example.
When an Italian or swede entered the usa he left behind him his former claims and knew in every way he would have to assimilate in his new country ,having no former rights or claims to make on his new residence.
The political danger is that mexicans living in their former states ,now american.will bring about a demographic reconquista . whether they want to or not,by means of their sheer numbers and their dead weight.
Do not let it happen!