“I don’t know what motivates people who insist on doubt here,’ said Brooks Jackson, director of FactCheck.org, who went on to say that Obama’s U.S. citizenship had been proven “beyond any reasonable doubt.… But it’s natural human tendency to believe what you want to believe and ignore any evidence that would make you change your mind.

“‘Some people believe in UFO cults, and there’s a whole group who thinks George W. Bush was behind 9/11; you’re not going to convince them otherwise,’ Jackson continued. ‘Trump has obviously decided — and he’s certainly succeeded — that he’ll get more ink saying this than something else, because if there’s one thing Donald Trump loves, it’s attention.'”

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