YOUTUBE (MS NOW) - 'What's our beef with the Canadians?': Economist says Trump's tariffs are 'surprisingly big deal'
Canada retaliated to President Trump's escalating trade war with tariffs on U.S. goods. Host of MS NOW's "The 11th Hour" Ali Velshi, Economist and Nobel Laureate Paul Waldman and Author of The Washington Post's "Early Brief Newsletter" Dan Merica join Katy Tur to break down the potential economic impact.