Why Did Tucker Carlson Echo Russian Bioweapons Propaganda On His Top-Rated Show?

Russia pushed a conspiracy theory that the United States is helping Ukraine develop biological weapons. There's no evidence for that, but the idea did end up on Tucker Carlson Tonight — a Fox News show that reaches, on average, more than 3.5 million viewers with each episode. How did the conspiracy theory find its way from the Kremlin to American conservative media? This episode: White House correspondent Asma Khalid, voting reporting Miles Parks, and domestic extremism correspondent Odette Yousef.