Maybe, but if you answer 'America', the next question isn't 'but where are you /really/ from?' as though the birthplace of your parents or their parents is a de

Maybe, but if you answer 'America', the next question isn't 'but where are you /really/ from?' as though the birthplace of your parents or their parents is a defining factor. And I say this a white British guy, but I've regularly witnessed the slightly different way that it is intonated at those that aren't white.