Vice President of the United States but not actually become President of the United States in their own right. This understanding was first tested in 1841, following the death of President William Henry Harrison, only days into his term. Harrison's vice president, John Tyler, asserted that he had succeeded to the office of President, not just to its powers and duties. He took the presidential oath of office, and declined to acknowledge documents referring to him as "Acting President." Although some in Congress denounced Tyler's claim as a violation of the Constitution, he adhered to his position. Tyler's view ultimately prevailed when the Senate and House
President of the Presidency of Yugoslavia Constitution defined the office of President of the Presidency, but only coming into effect with the disestablishment of the office of President of the Republic. A separate article affirmed Josip Broz Tito with an unlimited mandate which ensured the new President of the Presidency would not come into effect until after his death. Simultaneously an office of Vice President of the Presidency had been in place since 1971 on a rotating annual basis between republican and provincial representatives. When Tito died on 4 May 1980, the then Vice President of the Presidency Lazar Koliševski acceded to the role of President