"All the birthers* I've seen have been polykooks. This is typical and well documented. People who believe one impossible thing, usually believe most or all impossible things. Most also believe that the moon landings were faked, vaccines make you sick, the swine flu was genetically engineered by the Illuminati, the earth is 6,000 years old, the ancient Jews had pet dinosaurs. evolution is impossible, chemtrails make you dull witted, global warming isn't happening, UFO flying saucers are piloted by demons, George Bush isn't stupid, xian morality exists, and Dick Cheney isn't evil. The more imaginative weave them all into tapestries of lunacy. The Illuminati with the aid of the RCC and elves in their flying saucers piloted by Bigfoot and demons, visited Obama in Kenya for his birth and planned to take everyone's guns away after putting mind control and sterilizing chemicals in the water supply. I know one such. She is a severe schizophrenic who hates doctors because they are always trying to prescribe Zyprexa which she won't take. She also moves frequently because of evictions from places for disruptive and erratic behaviorial problems. They are just lunatics. The USA as a world leader in lots of things, is a world leader in crackpots and crackpottery."
*Birthers: people who believe that Barack Obama is not a natural-born citizen and is thus ineligible to be President.