Nightly News Full Broadcast - Sept. 12

McCarthy announces House will open impeachment inquiry into Biden; Iranian President Raisi speaks about prisoner exchange and protest crackdown: Exclusive; Escaped killer Danelo Cavalcante is now armed, according to authorities; and more on tonight’s broadcast. 00:00 Intro 01:23 McCarthy orders Biden impeachment inquiry 03:55 One-on-one with Iran's president 12:00 White House and GOP react to Iran president interview 12:49 10,000 feared dead in Libya flood disaster 13:11 Police: Escaped killer 'armed' with rifle 15:21 Flash flood emergency in New England 15:39 Who should get new Covid shots? 16:32 FDA panel: Many cold medicines don't work 17:06 Lester Holt reflects on the tense history between the U.S. and Iran » Subscribe to NBC News: » Watch more NBC video: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stori