Your post goes a long way to explain why Washington DC is the cesspool that it is, and why as the Joker said, “What this town needs is an enema.”
Maybe if we converted the Senate from a voting part of the Congress to an advisory panel, simply revised the rules on when the next elections tae place, and we could barge ahead like the Parliamentary democracies.
Of course they get the same smarmy politicians we do so maybe that's not a good idea.