Obvious, but very relevant to the constitutional issue.
Also, spoken like a good mathematician or logician.
What may happen, once he's out of office, someone could very well challenge some law he signed and not being valid due to illegal presidency. Then the dems will have to defend and ultimately prove nobama was eligible, this or just give in on the law being challenged AND any other law he signed.
Its likely that several states will pass a law requiring a candidate for US President to show eligibility proof to get on that state's ballot. Even one state will wreck electrorial vote. Plus, once one state does this others will follow. I will be surprised if he even runs for reelection in 12, in hopes it will put the damper on further “birther” concerns and hopes of quieting down law challenges.