what us supreme court justice presides over presidential impeachment proceedings
Chief Justice of the United States The Chief Justice leads the business of the Supreme Court and presides over oral arguments. When the court renders an opinion, the Chief Justice—when in the majority—decides who writes the court's opinion. The Chief Justice also has significant agenda-setting power over the court's meetings. In the case of an impeachment of a President of the United States, which has occurred twice, the Chief Justice presides over the trial in the U.S. Senate. Additionally, the presidential oath of office is typically administered by the Chief Justice (although the Constitution does not assign this duty to anyone in particular).
Impeachment in the United States Impeachment proceedings may be commenced by a member of the House of Representatives on her or his own initiative, either by presenting a list of the charges under oath or by asking for referral to the appropriate committee. The impeachment process may be initiated by non-members. For example, when the Judicial Conference of the United States suggests a federal judge be impeached, a charge of actions constituting grounds for impeachment may come from a special prosecutor, the President, or state or territorial legislature, grand jury, or by petition.