The Presidential Oath is a solemn promise taken by the President of the United States before assuming office. It is mandated by the U.S. Constitution in Article II, Section 1. The oath requires the President to swear to faithfully execute the office and preserve, protect, and defend the Constitution. Typically, the oath is administered by the Chief Justice of the Supreme Court during the inauguration ceremony. This event symbolizes the peaceful transfer of power and the commitment of the President to uphold the laws and principles of the nation. The oath is a key tradition in American democracy.