Starting with your first point, 1) except among the upper classes, Mexicans are not generally Spaniards. They are of mixed Native American, Spaniard, and to som

Starting with your first point, 1) except among the upper classes, Mexicans are not generally Spaniards. They are of mixed Native American, Spaniard, and to some small degree African descent. The upper class Mexicans tend not to be the ones encouraged to cross the border by Mexican government policy. 2) America's underclass starts looking much like Europe's once you account for race. Look at NAEP scores for North Dakota some time. Awful smart for a state with the same per-capita education spending as New Mexico. Guess what North Dakota has more of (and what it has less of) than any other state in the union. 3) The best measure of East Asian creativity is probably through patent studies. It is a hard thing to get a hold of. But there seems to be less of it -- and it's entirely possible that it's all due to living in highly socially conformist societies. But I'd be surprised. 4) Again, wrong. East Asians tend to do well even in places where they are imported as common laborers. All those Chinese tin miners in Malaysia, what do you think they're doing now? Certain groups become market-dominant minorities wherever they go, and certain groups become the opposite wherever they go. IQ is by far the most parsimonious explanation (as is backed up by a vast amount of evidence).