But they are the enligtened federation.
So does that mean every other president should be barred, too? Theodore Roosevelt increased US imperialism in Asia and elsewhere leading to a whole lot of colonial oppression and exploitation of native populations (whose effects are still felt today, over a hundred years later), and he encouraged eugenics of the social underclass, especially of the unemployed and the disabled -- and yet the Federation still saw fit to name a Starfleet vessel after him in Voyager. None of that seems very enlightened, but presidents and world leaders are fair game.
