Alex Knapp presents a philosophical defense of the Birthers:
Faced with this overwhelming evidence, the average person will no doubt shrug and consider the case closed. There is no question that the evidence points to the conclusion that Barack Obama was born in Hawaii and is therefore a “natural-born citizen.”
No question, that is, if you accept the dominant paradigm of metaphysical realism. That is, the idea that things exist independent of the mind and that those things are perceivable and knowable. Moreover, those who insist that Barack Obama is an American citizen also rely on philosophic naturalism–the idea that reality is subject to objective, knowable natural laws that can’t be tampered with.
However, if one rejects these two philosophic concepts, it’s quite easy to demonstrate that Barack Obama is not a natural-born citizen of the United States and is therefore constitutionally ineligible to be President of the United States.
That’s it.
I’m convinced.
By the way I also now believe in Leprechauns, Unicorns, and the Flying Spaghetti Monster.

What?
Apparently, philosophy jokes don’t go over well on Saturdays.
Or ever.
Don’t expect widespread laughter in response to a philosophy joke.
My favorite is “How did Descarted die?”
Someone asked him “Rene, do you think it will rain today?”
Descartes responded, “I think not,” and poof! He disappeared.