And this current SCOTUS has already given the President a lot of leeway. The current court has shown willingness to depart from academic consensus on presidential power in favour of treating executive power as absolute.
Trump could also -- and this is definitely possible -- step aside a few months before leaving office in favour of Vance, who very definitely *could* pardon him for anything done in office.
Either way, it is clear that the US Constitution now has enough holes in it for Trump-style corruption to potentially wriggle through. As I've said several times lately, the American Century is over -- as is America itself.