The way I saw it was it started with a Wikileaks email. And I'm paraphrasing "Obama paid $69,000 to have pizza and hot dogs delivered to the White House from Chicago for a party, Assuming we are using the same channels?" This is obviously a coded message because all food has to be prepared at the White house. People began digging and someone checked into D.C. area pizza places. They came across Comet Pizza and it's owner James Alefantis. His Instagram photo was a sculpture of the child lover of Tiberius. People began looking at his and his Instagram friends posts Also saw pictures off the artwork painted on the walls and looked into the artists. That's basically the start off it in my opinion. Also it hasn't been debunked, the left just says it has.