On October 9, Justice Brett Kavanaugh participated in his first oral argument as a member of the United States Supreme Court. One might think this moment confirmed the futility of continued fighting over his nomination. After all, the Constitution provides that federal judges, once appointed, serve “during good behavior”—meaning Kavanaugh now has the job for life.

But if you thought it was over, you would be wrong. One constitutional option remains for Kavanaugh opponents—impeachment. Some Democrats claim they will begin such proceedings if their party gains control of the House. If a majority of that chamber votes to impeach and two-thirds of the Senate concur, Kavanaugh would be removed from the nation’s highest bench.