OK, I agree that the SSN issue, if it demonstrates that he is not a US citizen, let alone an NBC, then becomes a constitutional issue.
But generally speaking, crimes committed by a presidential candidate do not automatically render him ineligible, according to the Constitution.
The bottom line is that every single aspect of this guy’s fraudulent existence need to be investigated as far a humanly possible, and NOTHING should be taken off the table, in spite of all the parrots who say “nothing will come of it, so let’s just move on and focus on the economy”.
Wrong. We have to focus on everything.
As to the rest, my posit stands. Identity theft = unknown identity = investigation + exposure = SHTF.