[Sidenote: Impeachment in England] The provisions for impeachment of public officers are copied from the custom in England. Since the fourteenth century the House of Commons has occasionally exercised the power of impeaching the king's ministers and other high public officers, and although the power was not used during the sixteenth century it was afterward revived and conclusively established. In 1701 it was enacted that the royal pardon could not be pleaded against an impeachment, and this act finally secured the responsibility of the king's ministers to Parliament. An impeachment is a kind of accusation or indictment brought against a public officer by the House of Commons. The court in which the case is tried is the House of Lords, and the ordinary rules of judicial procedure are followed. The regular president of the House of Lords is the Lord Chancellor, who is the highest judicial officer in the kingdom. A simple majority vote secures conviction, and then it is left for the House of Commons to say whether judgment shall be pronounced or not. [Sidenote: Impeachment in the United States.] In the United States the House of Representatives has the sole power of impeachment, and the Senate has the sole power to try all impeachments. When the president of the United States is tried, the chief-justice must preside. As a precaution against the use of impeachment for party purposes, a two thirds vote is required for conviction; and this precaution proved effectual (fortunately, as most persons now admit) in the famous case of President Johnson in 1868. In case of conviction the judgment cannot extend further than "to removal from office, and disqualification to hold and enjoy any office of honour, trust, or profit under the United States;" but the person convicted is liable afterward to be tried and punished by the ordinary process of law.