I have lived in the U.S., so I have met quite a few. But for top honors, I think I will go with a Catholic who I met who believed that the Inquisition was a good thing. He believed that because he believed stupid Catholic nonsense about evil sinners deserving hellfire and damnation. So what is a bit of torture to help get more to repent?
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.