08/10/2009 02:54 pm ET | Updated May 25, 2011

Birthers Question Existence of Obama

The so-called "Birther" movement turned up the volume today as one of its leaders questioned for the first time the very existence of President Barack Obama.

"We need proof that Barack Obama exists," said Birther leader Orly Taitz in an appearance on Fox News. "In my mind he's about as real as a unicorn."

While most Americans still believe that President Obama exists, a new poll shows that most self-described Birthers agree with the statement, "Barack Obama is not a real person and is probably just a hologram or something."

At a White House press conference today, President Obama refused to answer a question about whether he did not exist, saying, "I'm not going to try to prove a negative."

Elsewhere, a deal was reached to broadcast future health care town halls as UFC pay-per-view events. More here.