The U.S. population is projected to grow to about 420 million by 2050. (United States Census Bureau). According to the forecast of the US Census Bureau, by this time the proportion of the white population (IQ = 98; Lynn, 2006a, p. 174)
60/
60/
...will decrease to 45-48%; the proportion of blacks (IQ African Americans = 85, Africans = 67; Lynn, 2006a, pp. 41, 37) will increase from 12.7% to 15% or more; the proportion of Hispanics (IQ of Mexicans = 87; Lynn, 2002 a) will increase from 13% to 25% or more
61/
61/
Thus, the proportion of blacks in the United States is already well above the 10% than that Portugal had at the beginning of its decline. The USA is becoming more and more genetically homogenized, and there is little hope that this trend will be reversed.
62/
62/