All federal impeachment trials are heard by the U.S. Senate, which serves as jury. A two-thirds vote is required for conviction. In the case of presidential impeachment trials, the Chief Justice of the U.S. Supreme Court presides.

The Supreme Court plays no role in impeachment trials. However, in the impeachment trial of the President of the United States, the Chief Justice of the United States serves as presiding officer of the Senate since it would be a conflict of interest to have the vice president presiding over a trial at which he would become President if the current President were to be found guilty.

All impeachment trials are overseen by the Chief Justice of the US Supreme Court.

No. The power of impeachment and trial belongs to Congress. The House of Representatives impeaches; the Senate conducts the trial. When the US President is tried in the Senate, however, the Chief Justice of the United States (Supreme Court) presides. Under all other circumstances, the Vice-President presides over Senate trials.

Under current Senate rules, the Chief Justice of the US Supreme Court presides over any impeachment trials.