Didn't Mexico take the land from the native Indians?
Racist hypocrites.
Besides the land in question belonged to Spain --- which invited white Americans in and gave land grants to them which are still honored by the USA government. Mexico declared it's independence from Spain and was so unable to rule that it hung onto the northern territories for only something like 25 years. Mexico has been a mess ever since it's independence, it still has no ability for self-rule.
To be fair, most Mexicans are descended from native indians.
There were no Mexicans before the Spanish invaded because a Mexican is the result of the raped Indians by the Spanish.
There are the mixed breed, which is the Mexican as we know them and the Mexican Indian still exists in numbers.
They also SHOOT people at their southern border.
Spain claimed it from the Indians in the 1500's, Mexico won it from Spain 1821 and the U.S won in from Mexico 1848... so Mexico clam is the shortest 27 years... Sorry Mexico your last in line behind The US, Spain and the Indians for a claim on this land