President Donald Trump began his Monday morning by posting a tweet thanking his favorite TV show, Fox & Friends, for a “great show this morning.” Four minutes later, the president posted another tweet congratulating a lesser-known right-wing news network — One America News Network. “Also, congratulations to @OANN on the great job you are doing and the big ratings jump (“thank you President Trump”)!” he wrote. (It’s unclear what evidence, if any, Trump has that OANN has experienced a “big ratings jump.”) OANN’s platform is nowhere near as large as Fox News — the network is available via DirecTV and...