To those in the United States, happy Columbus Day!
For a longer and more detailed discussion by Michael Knowles, check out this video:
Indigenous applies to that which is not only native but which, as far as can be determined, has never been introduced or brought from elsewhere.
The prevalent migration models outline different time frames for the Asian migration from the Bering Straits and subsequent dispersal of the founding population throughout the continent. Indigenous peoples of the Americas have been linked to Siberian populations by linguistic factors, the distribution of blood types, and in genetic composition as reflected by molecular data, such as DNA.