In 1997, King joined CNN where he served as the senior White House correspondent from 1999 to 2005. In 2005, King was named CNN's chief national correspondent, a position he still holds. From 2014 to 2021, he anchored the Sunday morning (and more frequently during presidential-election years) news program "Inside Politics," which features a rotating roundtable of members of the media who share their insights of current political topics with King. He frequently appears on the nightly news programs "The Situation Room" and "Anderson Cooper 360°" and sometimes fills in as anchor.