According to the Presidential Succession Act of 1947, if the President of the United States is incapacitated, dies, resigns, is for any reason unable to hold his office, or is removed from office (impeached and convicted), people in the following offices, in this order, will assume the office of the President, provided they are qualified as stated by the Constitution to assume the office of the President, which means they have to be must be at least 35 years old, must be a natural-born U.S. citizen, and have lived in the U.S. for at least 14 years.
