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
Oath of office of the Vice President of the United States office of President of the Senate. Up until the middle of the 20th Century, the Vice President-Elect nearly always would be sworn in by the highest-ranking officer of the US Senate which was the outgoing vice president or the President Pro Tempore of the United States Senate. Sometimes, although not always, a short address would be given by the new vice president to the Senate. The oath of office has been administered most by the President Pro Tempore of the United States Senate (last in 1925) for a total of 20 times. Others to give the oath of office include