congress can- if they pull their heads out of their asses- impose ethics on the supreme court. States can go to ranked choice voting simply by doing it. Term limits would likely have to take an amendment.
yes. we can fix it. Will it be easy? absolutely not because these assholes built a system to share power between the two parties specifically because sharing power was more advantageous than risking people that would not maintain the status quo in. (No, this isn’t a “both sides” argument. the republicans being objectively, subjectively and in any other way you care to measure it genuinely awful people, does not mean the democrats aren’t assholes, too.)