I should think that Kennowick Man theory as presented in the book of that name is well centered in this article's premises. Did not the local scientist who did the first carbon 14 date sample extraction say that what we now call native American seems to be a gene pool less than six thousand years old?
That was this book.
"Did not the local scientist who did the first carbon 14 date sample extraction say that what we now call native American seems to be a gene pool less than six thousand years old?"
Yes. I repeat that often.