Final answer:
The Chief Justice of the Supreme Court presides over impeachment trials of the president.
Step-by-step explanation:
The Chief Justice of the Supreme Court presides over impeachment trials of the president. This role is outlined in Article I, Section 3 of the United States Constitution. The Chief Justice ensures that the trial is conducted fairly and impartially. For example, in the impeachment trial of President Donald Trump in 2020, Chief Justice John Roberts presided over the trial in the Senate.
Learn more about Impeachment trials of the president