presidents can only serve two terms according to which amendment
Roosevelt was the first and only President to serve more than two terms. The amendment was passed by Congress in 1947. It was ratified by the states on February 27, 1951. The Twenty-Second Amendment says a person can only be elected to be president two times for a total of eight years. It does make it possible for a person to serve up to ten years as president. This can happen if a person (most likely the Vice-President) takes over for a president who can no longer be president.