Do you think they tell you all the secrets the moment you're sworn in when you become president, or do they slowly dole them out to you for good behavior. They probably don't tell you all the secrets, it would blow your mind. Moment you're sworn in some CIA grunt pulls you into a dark alley, "You never heard this.... we've got 2 ufo's in a hangar and we put JFK's brain in a monkey."
--Paraphrased from Dana Gould.