You can keep reciting this stuff but believe it or not, I am not an armchair lawyer, I am really admitted--in two states. And although I am not a litigator by profession, I am admitted to practice before the Supreme Court of the United States; and have argued probably ten or twelve appellate cases including two that were affirmed without an opinion by the Supreme Court.
I would love to have this for a client that could afford to pay to get to the courts although the time to do that is slipping away rapidly.
Still ... here is a citizen, a historian, who wrote about what the "natural born" clause means. In his view (and mine) Obama would not be considered "natural born" by the extended intent of that phrase at the time of framing and adoption.
On TexasDarlin blog, "Judah Benjamin"'s Divided Loyalites, Obama’s Eligibility Problem — Part 1