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
Oath of office of the President of the United States affirmation, to support this Constitution." The presidential oath, on the other hand, requires much more than this general oath of allegiance and fidelity. This clause enjoins the new president to swear or affirm that he "will to the best of his ability, preserve, protect and defend the Constitution of the United States." While the Constitution does not mandate that anyone in particular should administer the presidential oath of office, it is typically administered by the Chief Justice. There have been several exceptions, however. George Washington was sworn into office during his first inauguration, on April 30, 1789, by Chancellor of