The entire population of Mexico is 2/5 of our own. Exactly who would they manage to "submerge" our culture?
Exactly, in fact with a flat birthrate and millions of its citizens wanting to live in another country, it's mexico that needs to be worried about being submerged. If this keeps up, it possible that in a generation or two mexico won't exist as an independent nation. But as part of, or a protectorate of the US>