They have a birth certificate that says they were born in the states, they have a naturalization document that states that they were born in the US or they belong to one of the many native tribes that I think have their own, passports and such.<br />
Other than that, can't think of any other 'quality' that would be inherent in a true American citizen
This is an unanswerable question for me. Being born in the US is not necessarily a quality. So I'll give you my prat answer.<br />
Must be patriotic<br />
Must be conservative<br />
Must be a member of the NRA complete with gun rack in truck and "goat ropers need love too" bumper sticker.