Bill Clinton is like Caligula in many ways.
Caligula, if I remember from History and not the movie (never saw) had sex with anything and everything, including boys and probably farm animals.
Clinton was probably more like Commodus or Nero and 0bama like is more like Elagabalus or Caracalla. Historians claim that Commodus marked the beginning of the end of the Roman Empire.
I think GW Bush was more like Claudius.
Even BJ only had a BJ...these guys went all the way.