Assuming you keep his personality intact? And that he is as outspoken about his opinions and turns into a comedian/speaker?
Well. The only way he could become the president and still be GC in any recognizable way would be sometime in perhaps about 2000ish.
And the only way I see someone as outspoken as him about the opinions he has becoming the US president is either a ASB level POD after 1950 or a massively mind altering borderline ASB level POD sometime before 1950, up to including when the monkeys climbed down from the trees and started walking upright.
Now, its probable that not all life on the planet is as self destructive as it appears, but from my merely human based observations I have to conclude that there is no way, on FSM's green earth that someone with such a voice of reason, sanity and just plain common sense would be allowed anywhere near political power by the people we, as the most unreasoned insane and just plain dumb human race that we are, elect to wield said political power.
In short, this is ASB, in my opinion because of this:
"You can make a nobody into a puppet, but you cant make a puppet out of a sombody"
TL;DR, ASB, more likely to see a third term for Bush in 2008 or Hillary and Obama have a child and declare that child the emperor of the moon.