"The first Fox New Democratic town hall held Monday night had its origins as a planned debate between Bernie Sanders and Donald Trump,
but the idea was scrapped after Trump pulled out of the debate.
The New York Times reports that Fox executives had the idea, which would have “made primary debate history” as the first face-off between Democratic and Republican presidential candidates before either party picked its nominee. The Sanders campaign agreed to the debate and the Trump campaign was “very intrigued” with the idea.
However, “before the debate could be announced, the Trump campaign pulled out, citing scheduling conflicts, so the network planned to welcome just Mr. Sanders in an hourlong town-hall-style event, hosted by Bret Baier as part of his ‘Special Report’ program.” Shortly after Fox announced the Sanders town hall, Hillary Clinton accepted an earlier invitation that she had rebuffed and the Democratic town hall was born.
Trump also pulled out of Fox News’ Republican presidential debate in January, before attending its March debate."
http://www.mediaite.com/tv/fox-news-almost-hosted-a-trumpsanders-debate-but-trump-backed-out/
Because he's a pussy.