“3. He could elect NOT to run in 2012 - which would NOT require him to prove anything ...”
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And what would happen if, later on, it can be shown without the shadow of a doubt that Obama never was eligible to be POTUS and that he and others were aware of this fraud?
Can he and his fellow conspirators be prosecuted and will the laws signed by him be valid or will they be repealed?
That is a good question - conceivably, it could. We won't know unless it happens ...
But, for now, Obama could evade questions about his eligibility in 2012 [assuming a state passes an eligibility law] by simply not running ...