1805: Justice Samuel Chase acquitted

(Wikipedia) ... President Thomas Jefferson was determined to seize control of the judiciary from the Federalists and to his own party. His allies in Congress abolished lower courts, which removed Federalist judges despite their lifetime appointments. Chase had to be impeached and Jefferson launched the process from the White House when he wrote to Congressman Joseph Hopper Nicholson of Maryland asking: "Ought the seditious and official attack [by Chase] on the principles of our Constitution . . .to go unpunished?"
Virginia Congressman John Randolph of Roanoke took up the challenge and took charge of the impeachment. The House of Representatives served Chase with eight articles of impeachment in late 1804, one of which involved Chase's handling of the trial of John Fries. Two more focused on his conduct in the political libel trial of James Callender. Four articles focused on procedural errors made during Chase's adjudication of various matters, and an eighth was directed at his “intemperate and inflammatory … peculiarly indecent and unbecoming … highly unwarrantable … highly indecent” remarks while "charging" or authorizing a Baltimore grand jury. The Jeffersonian Republicans-controlled United States Senate began the impeachment trial of Chase in early 1805, with Vice President Aaron Burr presiding and Randolph leading the prosecution. Continued