When the Senate majority leader, Mitch McConnell, called the chamber back into session two weeks ago, he did not do it to debate legislation regarding Covid-19 or other essential, time-sensitive business. Rather, as usual, he seemed mostly interested in having the Judiciary Committee consider confirming judges — this time most significantly Justin Walker, Mr. McConnell’s protégé, to the powerful U.S. Court of Appeals for the District of Columbia Circuit. This isn’t a surprise. The majority leader’s major priority for the last three years has been to confirm President Trump’s judicial nominees. Most of them have ties to the Federalist Society.