OK, we can continue this after you’ve had a chance to check those books. I did a bit of googling before I asked the question.
As for Treason, if the men were not convicted, then they would not be Constitutionally disqualified on that count.
Nothing in the Constitution prevents them from holding office even if they had been convicted. But I believe the House and Senate both passed laws allowing for that, and I'll have to do some digging over the weekend to find that.