Because of “O”-the bar is now so low, it’s a joke
I set the bar well above the O-level. There are about 12,000,000 illegals in the United States, and none of them are acceptable for the office, nor are the naturalized citizens, those mot natural born citizens, or the 149,000,000 citizens who will be under age 35 on January 20, 2013. That leaves only 148,000,000 eligible Americans under consideration. When you eliminate the mentally retarded (3%), those in prison (1%), and those over age 80 (3%), that leaves only 131,000,000 who could reasonably be considered for the position of President of the United States. Giving Obama the benefit of the doubt, I'd say that several thousand of those 131 million are no more qualified for the White House than the current occupant of that formerly great position.
Romney is barely above average among those who might reasonably be considered, Bachmann, Perry, and Newt are in the top 5%, and even Ron Paul is above O.