A sitting President that was seated through acts of treason doesn't have to be impeached. To impeach would lend credibility to the claim on the stolen office. Our founders would simply of hung the traitors by the neck until dead. No impeachment.

The constitution only applies to legitimate government, not stolen offices. Those fall under the same auspices claimed by the founders regarding King George. We, The People, hold the only legitimate power over rogue government. The 2nd Amendment should be your biggest clue. Tyranny by a legitimately seated President is one thing, and dealt with through constitutional means. Tyranny by a usurper is entirely different, and is not addressed in the constitution because it was common knowledge at the time it was written that the People possessed the only legitimate power over illegitimate or stolen government. The remedy is the People removing that which was usurped and seating a legitimate government in its place.