That may seem an odd question to ask given that many of us have just watched Barack Obama being sworn into office as the 44th President of the USA.
However, the 20th amendment to the US constitution specifically says that the term of office of a President ends at noon on January 20.
Obama didn't actually take the oath of office until 12.03.
I would therefore contend that the person who succeeded George W Bush as President was in fact Acting President Joe Biden - for a whole three minutes!
The Second Referendum, or, Obliquity
4 months ago