Truth be told, the vast majority of illegal immigrants can't trace their ancestry back to any of these Spanish. If they can trace it at all, it will be to those enlightened and highly civilized Aztecs who practiced human sacrifice, beheading of their captives and carving out still beating hearts.
This is what helped inspire the Apaches and Comanches on our side of the border to keep them out wherever possible.
There is no real Spanish history of the United States like there is a Black history and an Indian tribe history. In 1950 the total number of Hispanics in the Continental United States was about 1%. I am not including Puerto Rico and other off shore territories. Of those 1% you had some Puerto Ricans, Cubans, Dominicans who immigrated here
In that 1% you also had those famous old line Spanish families of New Mexico, Texas, fewer in Arizona and California who can truthfully claim “We did not cross the border. The Border crossed us”..... Where once they lived on land that the far away denizens of Mexico City “claimed”, after the 1848 US-Mexican war they now lived on American land, territories and states. My summation is that the Mexican and Hispanic influx started after World War Two. One should not be fooled by all those places with Spanish names in California and other SW states
Those old line Spanish families were (are) in fact 95-100% Spanish blooded. A while ago I met a woman from an old New Mexico family and she looked like she stepped off an airplane from Barcelona. It is not a secret anymore that the Mexican invaders we get these days are the Indians and semi-Indians of Mexico. They have little or no European culture drilled into them, why would they? They are proud to be indigenous here in USA but in Mexico and Central America they are at the bottom of the racist pecking order. It is only the dumb Anglo who accepts this invasion that we subsidize, that dispossesses our children. This transfer of Mexico indigenous population