Please cite the law or constitutional provision stating that a man who has committed fraud is ineligible to be elected President.
There ain't one.
You are quite correct that such a man should not be elected President, but that doesn't mean he is ineligible for this reason.
I don't believe there is even a constitutional bar that would make a convicted felon, even a traitor or murderer, ineligible for election. Hopefully the people would never elect such a person, but there is no provision to keep them from doing so.
Most of your other arguments are of similar type. He shouldn't be eligible to be president because of X, Y or Z. But that is a personal opinion with no legal force.
It is an offense to the Law of Nations