African Americans [ ... ] are a racially mixed or mulatto people—deeply and overwhelmingly so" (see genetics). After the Emancipation Proclamation, Chinese American men married African-American women in high proportions to their total marriage numbers due to few Chinese American women being in the United States. African slaves and their descendants have also had a history of cultural exchange and intermarriage with Native Americans, although they did not necessarily retain social, cultural or linguistic ties to Native peoples. There are also increasing intermarriages and offspring between non-Hispanic blacks and Hispanics of any race, especially between Puerto Ricans and African Americans (American-born blacks).
Scottish Americans million Americans self-reported Scottish ancestry, 1.7% of the total US population. Another 4.3 million self-reported Scotch-Irish ancestry, for a total of 9.2 million Americans self-reporting some kind of Scottish descent. Self-reported numbers are regarded by demographers as massive under-counts, because Scottish ancestry is known to be disproportionately under-reported among the majority of mixed ancestry, and because areas where people reported "American" ancestry were the places where, historically, Scottish and Scotch-Irish Protestants settled in America (that is: along the North American coast, Appalachia, and the Southeastern United States). Scottish Americans descended from nineteenth-century Scottish emigrants tend to be concentrated in the