What happens when a POTUS goes astray? There is the potential remedy of 'impeachment' which is a Constitutional mechanism. Let's suppose a US POTUS campaign conspired with a foreign government adversary/enemy to subvert a US POTUS election, and the ticket won the election. For the sake of debate let's say this is fact. How can the POTUS of said winning ticket be replaced by a Vice POTUS from the same winning ticket when said election was subverted via a conspiracy with a foreign government adversary/enemy? If the 'impeachment' process were to be utilized to replace the POTUS with the Vice POTUS, from the same winning ticket, that would be a farce, because the entire campaign/ticket is suspect & illegitimate. If we have only the Constitutional mechanism of 'impeachment' to replace a sitting POTUS, then in the above scenario, there would be NO legitimate option to replace an illegitimate POTUS with an illegitimate Vice POTUS. If the above scenario EVER comes to be, the American republic is in completely uncharted waters. The ONLY valid option would be to VOID the subverted election. Voiding the election would not be a Constitutional option so, such a scenario would be the END of our republic. Have a nice day.