If you read the decision by the judge that threw out Berg's lawsuit there is. Apparently it's the job of the electoral college to question and investigate eligibility. Or something along those lines.
There is no precedence for disqualifying a president AFTER he has been elected...
As in “It’s NEVER been done before”
I realize that the POTUS must be 35+ and BORN IN the US...
But no POTUS has been challenged on those grounds before...
SCOTUS time...
And Obama would win..