Acting President of the United States underwent colon cancer surgery while under anesthesia. Vice President George H. W. Bush discharged the powers and duties of the presidency during his incapacity, serving as acting president until later that day, when Reagan reclaimed his authority. The next to do so was George W. Bush, who underwent a colonoscopy procedure on June 29, 2002, and again on July 21, 2007. Vice President Dick Cheney temporarily became acting president on both occassions. Acting President of the United States An Acting President of the United States is an individual who legitimately exercises the powers and duties of the office of President
President of Ukraine exile. Upon the assassination of Petliura, the control over the state affairs were transferred to the former Prime Minister Andriy Livytskyi who in 1948 created the office of the President of Ukraine. Livytskyi served as the first president (in exile) until January 1954. Stepan Vytvytskyi served after Livytskyi from January 1954 until his death on 9 October 1965. Following Vytvytskyi's death, Ivan Bahrianyi temporarily carried out the presidential authority until the third president-in-exile Mykola Livytskyi (son of the first president-in-exile) was sworn into office. Livytskyi served from 1967 until his death in December 1989. Mykola Plaviuk was the last president-in-exile