The idea of American exceptionalism doesn't extend to Americans being exceptional.
"[American exceptionalism] is a reaction to the inability of people to understand global complexity or important issues like American energy dependency. Therefore, they search for simplistic sources of comfort and clarity. And the people that they are now selecting to be, so to speak, the spokespersons of their anxieties are, in most cases, stunningly ignorant."zbigniew brzezinski