That's a fair enough way to think about this from some angle. Specifically I guess the citizenship one which clearly makes people Americans way earlier than my scenario.

It's not as easy as that though on a more philosophical level and from various different angles. E.g. think yourself back to the days those Asian tribes presumably came to America. I read it was three waves. Was the first wave the only true "native Americans" then and the second wave was an immigrant already? That became "native" when and how then? (never mind that there was no such thing as citizenship of a country at that time)