Well, Old Guy, there are a number of upper-class Mexicans who are more-or-less "pure-blooded" descendants of the Spanish conquistadores. The majority of Mexicans are descendants of intermarried Spanish and indigenous ancestors. And, especially in some provinces, there are large populations of people who are mostly indigenous. It's the indigenous people who emigrate to the United States to find work.

OK, so maybe Mexico should pay back the $15 million, and then the US should allow unlimited access and forget about building the silly fence.
-Joe Offer-