Correct. There is a good case from southern Alaska with an individual dated at 10,300 years. The fun part is that individual's mtDNA is found in living individuals stretching on the west coasts of both North and South America.
This also argues against the idea of a global flood, as there is no trace of Noah type mtDNA in the New World.
There is a project (forget who runs it) to go around the world and sample DNA from “local” people to trace the paths of the humans in migration. Shoould be interesting when it gets published.