I’ve always thought Native Americans looked more Portugese than Asian. Just an opinion though.
That appears to be the case among the Indian tribes along the Eastern Seaboard, in places like North Carolina or New York, than in the West. Tribes like the Navajo clearly have an Asiatic appearance, as do many Mexicans and Mexican Americans, who are predominantly mestizo. Whether the somewhat Caucasian appearance of Eastern Indians is due to intermarriage with whites from the 17th Century forward or is the result of prehistoric migrations from Europe or North Africa is a matter of speculation. The Eastern states have instances of people who are not associated with any tribe, and whose appearance is similar to whites from the Mediterranean area or the Middle East, such as the Melungeons in Virginia and North Carolina and the Jackson Whites of New Jersey and New York. They either represent a post-1600 mixture of Indians with European and African settlers or are survivors of earlier migrations from the Old World.
That depends a lot on which tribes you’re talking about. Most of my Indian friends are Sioux, and they look more Asian than Portuguese, IMHO.