People who are indigenous American (Fully and almost fully)

[szin]

From USA:

Doesn't surprise me that a "full-blooded" North Amerindian has distant Euro and SSA ancestry (as well as East Asian, which is more than likely actually a signal of Beringian origin).

What does surprise me is the affinity with South America. Although the Navajo probably did mix with Mexican tribes (a possible explanation for the Spanish/Portuguese), any South American-derived admix has to be in the very distant past, brought north gradually over centuries.