Probably because you are taking it completely out of context. You don’t seem to understand the difference between someone born in a country, and those born to citizens or subjects outside of the country. Thus you take one sentence and end up facing the wrong direction.
The WKA court discussed the matter at length, citing sources. In context. Context being something birthers aren’t very good at...
You're just pissy because you're learning the hard way that virtually every bit of information you've been spoon-fed by someone who obviously has an agenda... is WRONG.