Shortly after returning to the States with my Korean wife, we stopped at one of the Navajo trading posts off I-40 near the Arizona-New Mexico border. My wife was quite embarrassed when she mistook two young Navajo women for fellow Koreans.
I had an American Indian associate at work. We had a group of Japanese engineers visit our work site for a year (they brought their families). Then, we had a 'get-together' of the American and Japanese families. Everyone made a comment about how the American Indian kids looked just like the Japanese kids.