Answer:
Yes, although they are considered to be Native Indians of Mexico, the term America refers to North and South American and all indigenous peoples of the hemisphere. The term 'American Indian' is not commonly used outside of the United States or among native peoples themselves. A more general term such as aboriginal peoples or First Nations (for the aboriginal peoples of North American, especially those from Canada) has broader application. Eight North American Nations and twenty-plus tribes are located on both sides of the border between the USA and the Republic of Mexico. The correct way to refer to specific groups is by their tribal name, e.g., Iroquois, Navajo, Inupiat, etc.