To my great relief, my census questionnaire only asked how many people live here, their race, and ages. Those of us with great-grandparent native american ancestry can’t check two boxes — you have to have registered officially with a tribe.
I checked two boxes. I figured, if my 1/16 Indian blood is good enough for set-asides, it was good enough to check the box. I wrote Cherokee in the tribe boxes, but even my Indian ancestry is mixed.