When I encounter a form that asks my race, I find a way to write in 'HUMAN'.
Blood interchanges if you follow the rules, likewise body parts - how different can we be under what folks choose to see?
These appearance-based 'differences' are all invented nonsense, invented so someone somewhere can feel superior to someone that he doesn't look like. Balderdash at its best.
I am naturally suspicious of anyone that hyphenates AMERICAN and places something before it - I am first and foremost an AMERICAN. My ancestry might well be something else, as we all had to get here somehow, and over time I have spoken a couple of languages other than English, because I lived in places where they were more common, but here it's English, folks.