Mexicans are white.
Not really. I know the whole three races concept. Caucasoid, negroid, and mongoloid, and all. But most of the Mexicans flooding in are not well described as “white”. Broadly, they are a mix of mongoloid (native American) and Spaniard (a mix of caucasian and african from the moorish occupation days)
So at best, most are a quadroon or something.
Mexicans of Spanish decent are white Europeans.
Not for the most part. If they were, the wall would already have been built.