Somebody mentioned the 1-drop rule, I always thought that the 7/8 rule was the norm to designate one's "predominant" race. It was by such a rule that Thomas Jefferson's grandchildren (7/8 white) through Sally Hemmings, for the most past part chose to, and were classified as white in census records.

Many people which view race strictly as a social condition seem to omit from their argument this "7/8 rule." Those who view race strictly through the social prism seem to believe, and some even dream about, a day when the entire human race will be uniform. Some dark beige or brownish skin tone with dark brown hair, were blue eyes would be seen as freakish. This would seem horrendously boring to me and thankfully would be almost impossible to arrive at by natural means.

Allow me to use myself as an example. I am not white. My mom, as far back as 6 generations, is white. My dad, for whom I can only go as far back as his parents, would be at least 6/8 Central Mexican Indigenous, perhaps more. This makes me 5/8 white and 3/8 Indigenous. In my physical appearance this is obvious. My skin tone is brownish in tone, my natural hair color is a very dark brown, and I have dark brown eyes. (What most Americans envision when they think of a Mexican person)

The man that I will be marrying later this year, also Mexican, is 7/8 white. Meaning that he is classified as white. Again, his physical appearance collaborates this. White pinkish skin, freckles or turns red before tanning, light brown hair, green eyes. (yes, there are white Mexicans)

By my calculations, our children would share physiological traits that could be classified as both indigenous and white. They would be a transitional generation speaking in genetic and physiological terms. Depending upon whom my children marry, my grandchildren will then either revert to a more wholly indigenous or a more wholly white physiology.

This is why for millennia there have always been different races amongst humans. Migration patterns, economic and sociopolitical factors, environmental conditions, food supply, etc. all of these are merely environs which cause different people to shift around and in so doing mix up the gene pool; but, mix as much as you want the gene pool, distinct races still will exist.

Personally, I find that fascinating. So, will whites one day be a minority in the US? Perhaps, current data would seem to imply that. Yet, I can also tell you that one day, they will be a majority again, and then a minority, and so on, and so on, and so on.

All the more reason why a nation should build their identity around a culture, not so much a race. That is why I cringe when I see so many people in the US adopt multi-culturism as an ideal to strive for. In Ancient Rome the genetic pool changed many times. To be Roman was not so much having Roman blood, but rather adopting, promoting and defending a Roman cultural ideal. Which race has a larger percentage of the population should not be the concern, as long there is a predominant social culture held in common that binds all under a national identity.