Chief Judge David Sentelle’s recent opinion in Noel Canning v. NLRB holding President Barack Obama’s recess appointments unconstitutional is a trenchant reminder that the D.C. Circuit is, as is often said, the nation’s “second most important court after the Supreme Court.” It has also been, historically, a stepping stone to the high Court. The court now faces four vacancies among 11 judgeships with Sentelle’s February 12 assumption of senior status. But the Obama administration is the first in decades which confirmed no D.C. Circuit judge and has only submitted two names for consideration. The importance and complexity of the circuit caseload means it requires all eleven judges to deliver justice. For this reason—and to increase ideological balance on the court, which has four active and five senior judges whom Republican presidents appointed—Obama and the Senate must expeditiously fill the D.C. Circuit openings.