Answer:
If the President of the United States gets very ill or dies in office, the Vice President will assume the role of President. This is outlined in the 25th Amendment to the U.S. Constitution, which specifies the procedures for presidential succession. The Vice President would take the oath of office and assume the full powers and duties of the President, serving out the remainder of the term. If the Vice President is unable to serve as President, the line of succession continues to the Speaker of the House of Representatives, followed by the President pro tempore of the Senate, and then to members of the Cabinet, in the order in which their departments were created.