Maybe my position isn’t quite as cynical as yours. I don’t think they exists just to do as you say above, rather they are just rather ineffective and bicker publicly far more than their opponents, leading to much the same outcome. Yes, they need to sort themselves out and start acting in the best interests of the country. The only way they’ll do that is if they have a clear and consistent message from a large enough proportion of the electorate to make it worth their while. Were it pretty much anyone except trump, I’d say making an example of Biden would make sense, but considering reality I don’t think that’s wise.