The simple answer is we need constitutional reform. Term limits on SCOTUS, codification of norms (eg releasing presidential candidate tax returns, not blocking appointee confirmations indefinitely to steal the position for the next admin), anti corruption laws with teeth. Also things like reigning in the absurd executive power bloat that’s gone on since Lincoln. POTUS was never meant to be a king. There should never be a case where the executive can start a war (conventional, trade or otherwise) without even CONSULTING Congress.
This is all just reshuffling deck chairs on the Titanic.
You can't turn corrupt officials into honest ones by changing the laws they're already turning a blind eye to. And you can't use systems (such as the political parties and their donors/owners) that exist to further corruption to reign it in.
Americans need to want honest governance, and be willing to go to the mat for it. Until and unless there's a substantial engaged minority will to do so, changing the rules is just theater. And if the government was honest, the existing laws are sufficient. Nothing stops Congress from removing Trump and the Supreme Court tomorrow, save their own lack of interest in doing so.
You are suggesting what you really need is a guillotine?
No. That might be what our current leaders deserve, but it won't fix the problem of grossly dysfunctional governance, particularly at the highest levels. Which makes it just a dangerous (to everyone) waste of effort. (And I do not mean just the current government. The whole kit & kaboodle, going back decades, has comprehensively failed.)
Personally, I think the best solution is to abandon the federal government as unfit for the purpose. Build a new one to handle what may actually be needed from the states and other existing and new interstate and international organizations. This will not be easy (gross understatement) but I think it is still more likely to succeed than any attempt to fix the current Constitutional government.
That can't happen from anything short of civil war.
If being an insurrectionist and convicted felon and neck-deep in the Epstein ring wasn't enough to sink the guy, I don't think anyone who voted for him (or anyone who for good or bad reason, abstained) would give a single flying fuck about his tax returns.
What matters is the taxi, not the checkers. Stuff like tax returns is window dressing.