Rupert Murdoch, the powerful right-wing media mogul who built and oversaw one of the world’s most influential news empires, announced Thursday that he will step down as chairman of his companies, Fox Corporation and News Corp.

Tucker Carlson, the highest rated cable news host in history, is out at Fox News. The news comes days after the network cut ties with host Dan Bongino 48 hours after the network settled with Dominion Voting Systems for nearly $800 million.