The Democratic Party’s semi-public bickering over what to do with Joe Biden needs to come to an end very soon, lest it turn into a horrific party-rending conflict or a de facto surrender to Donald Trump. While he can technically be pushed out of the nomination, it would be nightmarishly difficult to do so given his virtually unopposed performance in the primaries and the lack of precedent for anything like a forced defenestration of a sitting president.