Well, it was theoretically possible

ScrappleFace: 1972 Email Casts Doubt on Bush Guard Service (2004-09-09) — CBS reporter Dan Rather today released the text of a recently discovered email from then-Lt. George W. Bush’s Air National Guard commanding officer which casts more doubt upon the military service of the man who would become the 43rd President of the United States.

But does he have to sit next to me?

Via ScrappleFace (2008-08-20) — Senator Edward M. Kennedy, D-MA, does not pose an immediate threat to the security of the American homeland and he should be allowed to board commercial airliners, according to a statement from Homeland Security Director Tom Ridge.