You don’t have to be a member of a North American Indian tribe to be Native American. I am Central Native American from Panama (Guaymi/Ngabare, paternal great grandmother, though not culturally connected, but yes genetic)…If you want to “get” at any monetary compensation owed by Euro North Americans to our brethren North American Indians/Natives for the land/mineral rights usurpation and mistreatment, THEN you’d have to prove you are Native North American (U.S. or Canada), and have tribal affiliation documented. Same goes if you want to grab at any of their casino profits, but I don’t think our Inca/Sri Lankan brother is after any of that. If I were you, I would self i.d. as all or nothing…or ‘Other’.
I am also Chinese (paternal grandmother), obviously Afro (Caribbean Jamaican, and Colombian mulato) and very culturally Hispanic - Latin (1st generation), but my maternal grandfather is a gringo (Irish/Scott, Euro Norteamericano who sowed some seeds in Panama). And my maternal great grandmother was Spanish. The last census taker requested a social worker come ‘look’ at me and interview me. Pfffst!!! We settled on ‘other’. Pretty soon, we will have so many mixes, that they’ll have to give up this counting by colors or races. One human race.
And NO,INCAN roots do NOT fall under Hispanic. We are Hispanic by conquest and invasion, then the Spanish language and other cultural infections left by the Spanish ‘conquistadores’. Conquistar means more like to win over, not invade, which is what they did. You may conquistar or win over the affections/favors of a person you’re crushing on. Euphemistic labels.