How many justices of U.S. Supreme Court have ever been impeached?
Only one Supreme Court Justice, Samuel Chase (one of the signatories to the Declaration of Independence), has ever been impeached. The House of Representatives accused Chase of letting his Federalist political leanings affect his rulings, and served him with eight articles of impeachment in late 1804.
Samuel Chase (April 1741 – June 1811) was an Associate Justice of the United States Supreme Court. On January 26, 1796, President George Washington appointed Chase as an associate justice. Chase served on the Supreme Court until his death on June 19, 1811. He died of a heart attack.