The chief justice of the Supreme Court traditionally reads the oath of office to the incoming president, but the vice president has more flexibility.

he shall take the following Oath or Affirmation: — "I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my ...

Trump was sworn back into the White House as the 47th U.S. president Monday at an inauguration ceremony held inside the Rotunda of the U.S. Capitol.