i also figured native americans have to be related to asians.
I decided not to "correct" you earlier, but I grew up around many different people who were descended from various western American Indians.
They actually considered the phrase "Native American" to have no meaning and they are quite insulted by the PC nomenclature, from the time it began. They don't mind being called American natives (take note of the lower case "n"), but prefer to be called Indians, since there is a tradition there and many of them still refuse to recognize the USA or the Mexican governments.
Most of the people I knew spoke their native dialects in their homes, lived in small family communities and learned English from their grandfathers, around a fire. They have little regard for the modern phrases. I DO have a great deal of regard for their lifestyle, which is based on individual freedoms and improving oneself. You can call them Indians. It's OK, although if you call them western Indians that means Apache, Hopi, Yaqui, Navajo, Comanche, Pueblo, Souix, etc and if you say eastern Indians, you are talking about the Cherokee, Miami, Iroquois, Seneca, Kickapoo, Menomini, Algonquin and Pottawatomie, etc. That could get a little tricky.