Allies of President Trump are pursuing an effort to acquire right-leaning news channel One America News Network, according to people familiar with the matter, in a bid to shake up a conservative media market that has been dominated by Fox News. The investment firm Hicks Equity Partners is looking to acquire the channel and is pitching other wealthy GOP donors to arrange a bid of roughly $250 million for the channel’s parent company, the people said. The firm is owned by the family of Thomas Hicks Jr., co-chairman of the Republican National Committee and a close friend of Donald Trump...