If your argument had any legal weight, it would have been heard in a forum far more influential than this one. That is has not speaks volumes about its efficacy, if not its legitimacy.
Whether Obama is a "legal" president or not, he is recognized as such. There is no way you're EVER going to be able to invalidate all his actions since becoming president. So if that's your tack, study up on Don Quixote, cuz you're tilting at the world's largest windmill.
That the argument I have presented hasn't been legally presented is not my fault. That does not invalidate the argument but just proves what cowards the leaders of this nation, at the federal and state levels have been.