AdvertisementAdvertisementCan a Supreme Court Justice Be Impeached? But if you're not a history or constitutional law expert, at this point you might be wondering: Can a Supreme Court justice really be impeached? But the impeachment clause has only been used once against a Supreme Court justice, and that was more than two centuries ago. That didn't completely stop Supreme Court justices from engaging in politics, as long as they didn't express their views in court. AdvertisementAdvertisementThe Impeachment Protocol TodayThe impeachment and trial of a Supreme Court justice essentially would follow the same process seen in the judicial cases, according to Harrison.