The black american population has strategically been kept to around 12-13% for decades. There's no way we are that stagnant. And I've read the white population got the biggest boost from hispanics identifying themselves as white now. http://www.nytimes.com/2012/01/14/us/for-many-latinos-race-is-more-culture-than-color.html?pagewanted=2&ref=mireyanavarro