Brian Stelter, the host of CNN's "Reliable Sources" and author of "Hoax: Donald Trump, Fox News and the Dangerous Distortion of Truth," discusses how a Donald Trump TV channel would perform next to Fox News. Watch the clip to hear why he says it'll be "very difficult" for Trump to launch a channel. And watch the full episode to hear more from Stelter on his book, which takes a deep look into the credibility of Fox News and its close relationship with Trump's White House.