The White House’s new media ‘bias’ tracker is a desperate gimmick | Margaret Sullivan

The site isn't exposing misleading reporting - it's revealing the bubble Trump increasingly inhabits

Donald Trump has used the mainstream press as a punching bag for many years, but in recent weeks his jabs have become even more frequent - and more ill-tempered.

He threatened to sue the BBC for $1bn last month over the editing of a documentary that aired more than a year ago. He called one White House reporter piggy", and told another - the well-regarded Mary Bruce of ABC News - that she was a terrible person and a terrible reporter". He called a New York Times reporter ugly, both inside and out".

Margaret Sullivan is a Guardian US columnist writing on media, politics and culture