The parent company of Fox News has hired a former top aide to Joe Biden as its chief lobbyist in Washington. On Tuesday the new Fox Corp., a spin-off of 21st Century Fox which just merged with Disney, became a standalone public company, controlling television assets such as Fox News and the Fox television network. Broadcasting & Cable reported that new Fox “hit the ground running on day one” with its Washington lobbying operation headed by Danny O’Brien, a well-known Democrat. O’Brien was brought on last October as executive vice president and head of government relations for the Fox Corp....