Look at the attractive website of the Indian Pueblo Cultural Center, owned and operated by the 19 Indian pueblos, and designed to educate visitors to Indian Peoples and Cultures of the American Southwest.

Indian is the preferred term among them unless the person you are speaking to can be identified more closely.
Indian Pueblo website: Indian Pueblos

American (including Canadian) whites, in their stumbling attempts at political correctness, end up complicating issues.