There is not a problem with having proof, the problem is having a court allow the case to proceed and accept the evidence.
So far all the cases have been dropped based on the standing not the evidence introduced.
On a recorded broadcast obama admitted to Keyes( his opponent in 2004) that he was NOT a natural born citizen. He stated that it was not important since he was not running for President.
Having proof is not the problem,the problem is having someone with the balls to stand up to obama and the media.
The courts are reluctant to accept the case because there is absolutely no established precedent -- no clarity over what "natural-born citizen" really means in the Constitution.
You and others have an opinion. Yet others have a different opinion. Many have no idea whatsoever. As of now, all opinions are equally valid. Including Vattel's.
Under the current circumstances, no court is going to touch it.
If you want it resolved -- which, I grant, would be a good idea -- the Congress needs to pass a statute clarifying the what they believe to be the framer's intent. Then, that might be tested in court -- finally delivering a definitive answer.
The NBC argument is a red-herring...a distraction.
His opinion, oddly, is as good as anybody else's. And, like everybody else's, it doesn't count in a court of law.