Trump seems ‘very bothered’ by ad that prompted him to cut off trade talks with Canada

I'm joined now by NBC News White House correspondent Yalsendor, NBC News senior business correspondent Christine Romans, and Daniel D. Roer, international trade reporter for Politico. Thanks to all of you for starting us off on this big day for the economy.Yamich, let's start with you. So, Ontario says it's going to stop running the ad. What could the implications of that be.Could President Trump restart talks. Is that enough. >> Well, Kristen, I can tell you that that is a key question.as soon as this news ...