Monday marks the deadline for U.S. trade envoy Jamieson Greer to inform Congress of changes the Trump administration is planning for the Canada-U.S.-Mexico Agreement, ahead of a review set for July 1. Canada-U.S. trade minister Dominic LeBlanc will head to Washington Tuesday to meet with Greer. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@