Wong Kim Ark was a dual-citizen. Where in the case and supporting cites does it say a dual citizen is equivalent to a natural born citizen?
The question what is a natural born citizen in the article II sense does not seem to be directly addressed.
Because Wong was ruled a citizen because he was born here. The language in the case, as partially posted at 1887, clearly indicates that: born here=citizen=natural born citizen.
Who cares about Chinese citizenship. Wong court said expatriation was a right. Obvious that Wong, and Obama have claimed their American citizen rights.
parsy