FRAUD is the central issue as to whether he is now or ever was eligible to be President. People can argue to they are blue in the face about the natural-born issue, but some judge could easily rule that all it takes is one citizen parent, especially when the non-citizen parent had virtually no role in his upbringing.
FRAUD is simple and obvious.
ML/NJ
Executive Summary Re NBC Defined in Constitution Plus 4 SCOTUS Cases