President Trump’s chief strategist Steve Bannon is leaving the White House. The former Breitbart News publisher has had a roller coaster ride in both the Trump campaign and the Administration, facing criticism from establishment Republicans and civil rights groups over his economic nationalism and ties to the alt-right. Here’s a timeline of Bannon’s highs and lows with Trump. July 21, 2015: Trump tweets approvingly of a Breitbart story criticizing NBC News.