It is no accident that the Supreme Court made a rare and possibly unprecedented decision to post Trump v. Slaughter and Trump v. Cook online at the same time on Monday. The first decision held that the president has the power to fire agency heads. The second created an exception for the Federal Reserve.

Usually, decisions are posted as announced, with justices allowed to read their dissents, as Justice Sonia Sotomayor did in Slaughter. But that would have left half an hour between the court announcing that President Donald Trump may control federal agencies and revealing that the Federal Reserve is an exception. Such a delay would have affected financial markets, which Chief Justice John Roberts rightly wanted to avoid.