The Supreme Court is about to drown us in a deluge of explosive and massively consequential decisions involving some of the most controversial issues of the day. Right now, the justices are scrambling to complete blockbusters involving abortion, guns, homelessness, unions, social media, online disinformation, pollution, the administrative state—and, oh yes, hundreds of Jan. 6 prosecutions, including Donald Trump’s. Yet at the moment, there’s a logjam: The court, which likes to wrap up decisions by the end of June, is way behind schedule, releasing just a trickle of minor cases several weeks in a row. Even if it stretches into...