> SCOTUS has already given POTUS immunity in any form other than impeachment followed by a conviction.
That's not exactly accurate and that nuanced difference may be the key to holding the executive branch accountable, now that we're in this disastrous state of the world.
Specifically, POTUS has absolute immunity from criminal prosecution for actions that are within their constitutional authority, presumptive immunity from all official acts (but not absolute), and no immunity from unofficial, private acts committed by the president.
Congress could also pass legislature or constitutional amendments to revert the effect of that tragic decision, though of course those also come with their own sets of challenges.
That's not exactly accurate and that nuanced difference may be the key to holding the executive branch accountable, now that we're in this disastrous state of the world.