Ill with tuberculosis, King was in Spanish Cuba in an effort to recover in the warmer climate, and was not able to be in Washington to take his oath of office on March 4. By a Special Act of Congress, he was allowed to take the oath outside the United States, and was sworn in on March 24, 1853. He is the only vice president to be sworn in while in a foreign country.[1] King died 45 days into his term, and the office remained vacant since there was no constitutional provision which allow an intra-term vice-presidential office filling; it would be regulated by the Twenty-fifth Amendment in 1967.