While the Trump administration tries to ease concerns in the U.S. about crashing markets, some Republicans are breaking ranks with the president on tariffs. Power & Politics hears from Democratic Sen. Peter Welch from Vermont on the economic impacts of Trump's tariffs and cross-partisan efforts within the Senate to stop tariffs imposed on Canada. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS Connect with CBC News Online: For breaking news, video, audio and in-depth