it is a mixture of different races/blood. People back in China really lacks knowledge about immigration history of US.
WASP is clearly not the majority of white Americans. Actually German americans are huge in this country. I am just puzzled that how can that article even missed Swedish/Danish/Norweigian and Irish Americans. Because without the first, we will not see blonde people. And Irish Americans are as large as 40m in US.
USA's strength lies in its system, purity in blood means nothing. Human beings are not horses.