Oath of office of the President of the United States case the phrase must be omitted. Given that nearly every president-elect since President Franklin D. Roosevelt has recited the codicil, it is likely that the majority of presidents-elect have uttered the phrase (as well as some vice presidents, while taking their oaths). However, as President Theodore Roosevelt chose to conclude his oath with the phrase "And thus I swear", it seems that this current of tradition was not overwhelmingly strong even as recently as the turn of the twentieth century. Since the office of President of the United States came into existence in 1789 there have been 58 public swearing-in
Science Advisor to the President War II by President Franklin Delano Roosevelt. Vannevar Bush chaired this office through Roosevelt's death in 1945, and continued under Roosevelt's successor Harry S. Truman until 1951. After the war, President Harry S. Truman replaced the OSRD with the Science Advisory Committee in 1951. The office was moved to the White House on November 21, 1957, by President Dwight D. Eisenhower to provide advice and recommendation in response to the Space Race started by the USSR's launch of the first artificial Earth satellite, Sputnik 1. President Richard M. Nixon eliminated the PSAC in 1973, rather than appointing a replacement for