Please see post #100 for additional info
I did a brief search of Chippewa and Ojibway and it looks like these groups were involved when looking for haplogroup X.
I also saw the History Channel program “10,000 BC” but as is the case with most of these programs the information they used was dated.
Not long ago X was thought to be a European phenomenon. Now it is known to be worldwide and consist of two sub groups. AFAIK the New World X is haplotype X2a and is not seen anywhere else nor is it a descendant of one of the European haplotypes.
Of course, there can always be new finds but I didn’t see any concerning another source of haplogroup X for NA. If there is I’m interested in reading about it.