What is required for a President to be impeached?

To impeach a President, a simple majority vote in the House of Representatives is required. This process serves as the initial stage of impeachment, where the House investigates the allegations and decides whether there is sufficient evidence to bring charges, known as articles of impeachment. If the House votes in favor of impeachment by securing a simple majority, the President is then formally impeached, leading to a trial in the Senate.

The subsequent step involves the Senate, which is tasked with conducting the trial. For the President to be removed from office, however, a two-thirds majority in the Senate is necessary, which is a separate and more stringent requirement than what is needed in the House. Other options, such as a unanimous decision by the Supreme Court or a majority vote in the Senate, do not play a role in the impeachment process. Therefore, the correct answer focuses purely on the requirement at the House level to initiate impeachment proceedings.