In a rare move, the top five US broadcasters said on Monday that they were halting "pool" coverage of the White House, where a broadcaster films on behalf of all television outlets for the day, in solidarity with CNN.US news networks staged an extraordinary protest against the White House ban on CNN, MS NOW and Politico on Monday, effectively boycotting all coverage of President Donald Trump.Journalists from the three outlets were denied any access to the White House grounds on Saturday and had...