Obama’s best protection is Joe Biden.
Joe & Weepy. . . . . Have kept him alive. . . . .
It's much worse than that...there isn't a single person on the list of the first 17 possible successors who would be an improvement on the present occupant, with the possible exception of Speaker Boehner--but I would not expect him to roll back any of the wrong moves of the present administration, so we would not be better off if by some dint of coincidence the President and Vice President were to leave office simultaneously. http://en.wikipedia.org/wiki/United_States_presidential_line_of_succession