LoL. No kidding. Welcome to FR, CC.
For a great analysis as to why simply being "a citizen" is not enough to qualify as a Natural Born Citizen eligible to hold the office of the presidency, read the following excellent piece put together by fellow FReeper, Sourcery.
http://www.freerepublic.com/focus/f-news/2840767/posts
It's all about presumed loyalty.
Thanks for re-posting the link to Sourcery’s excellent piece, Jet.