Winston Churchill, who was made an honorary citizen of the United States by Congress, once remarked in a speech to that body that if his father had been American and his mother English, instead of the other way around, that he might have gotten there on his own. Among his American ancestors, he had a member of the Iroquois tribe.
It turns out that he was 1/16 Iroquois. That’s twice the imagined Cherokeeness of Elizabeth Warren, but I have difficulty believing that he would have ticked any boxes on a minority preference form. He strikes me as the sort who would have gotten there on his own.