Donald Trump March 7, 2018 6:55 am White House Chief Economic Adviser Gary Cohn Resigns President Donald Trump’s top economic adviser, Gary Cohn, resigned Tuesday after butting heads with the president over tariffs. US & World Videos 0:37 Ex-Abercrombie CEO arrested on sex trafficking-related charges 9:07 Selena Gomez and Benny Blanco's sweetest moments 0:31 The price to watch Lionel Messi in Los Angeles 2:13 Real-life ‘Karate Kid' meets his inspiration 2:12 What to expect in court as Trump faces 2020 election charges in DC