When the original NAFTA was negotiated and signed in 1992, Carla Hills was the chief American negotiator who ushered in that new era of free trade. Today, Hills tells Power & Politics she's 'very concerned' about U.S. trade action and calls President Donald Trump's tariffs 'tremendously harmful.' »»» 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 coverage: http://bit.ly/1Z0m6iX Follow CBC News on

Tag-uri: Donald Trump