So much of what DJT is doing should be disallowed but isn't. So we can disallow them and then add an amendment to reverse all DJT executive orders and pardons.
They most certainly committed other crimes which were uncovered when they were investigated for the crimes that they were charged and now pardoned of.
Also as I understand it, while the can't be tried twice for the same crime Federally, it's still possible that they can be tried in a state court for committing the same crime.