So in Canada they keep changing it. Currently Aboriginal is the preferred term, First Nations the other. In the US coasts where they look to be P.C. it’s Native American (which folks like Russell Means finds ridiculous since anyone born in the US is Native) and in Indian Country American Indian is the preferred collective term. Obviously this applies to collective terms as opposed to referring to particular peoples by their nations name.
But I forward a new solution. Since we have African Americans and Asian Americans and we should thus use European Americans… should the preferred collective term for the indigenous of the Americas not be American Americans? 🙂