Would he forbid it? Disown them? Deport Miguel and Rosarita even though they were natural- born American citizens? Find a way to take them out? How desperate would he be if he had mixed-blood grandchildren? You know Mexican (they ARE CAUCASIAN by the way) and White? Or do you think he has sufficiently brainwashed them against people of color so they would never be attracted to a handsome hunk or a gorgeous beauty?
What if they were millionaires or billionaires and quite brilliant and accomplished in their fields? Would that make a difference to the puppet boy? Big money always impresses him. I don't think accomplishment of others ever impresses him because according to him he is the best the greatest the smartest the most accomplished anyone or anything that ever lived or ever will. Money talks. Greedy folk always hear it.