When 9/11 truthers confronted Tucker Carlson on the campaign trail ahead of the 2012 Iowa caucuses, the famous former host of CNN’s Crossfire didn’t mince words with the conspiracy theorists.

Amid the vitriol, one divisive figure back in the spotlight is Tucker Carlson, who formerly hosted a show on Fox News. Carlson, who's been on the campaign trail for Trump, recently garnered ...