According to the Census Bureau, the number of people of mixed heritage has risen significantly between 2000 and 2010. More specifically, the number of Americans who identify as mixed white and black has grown by 134% and those of both white and Asian extraction by 87%. Frey's research also suggests that at the national level, Hispanics and Asians are the fastest growing racial minority groups in the United States while the number of Caucasians under the age of 18 has been declining since 2000. This demographic change could have social, cultural, and political implications for the decades ahead.