There is nothing new here. Previous Administrations have taken the same stance on softwood lumber and pork/beef products and labelling. Obama also encouraged "Buy American" when times were tough......which although, not covered by NAFTA I don't consider was within the Spirit of the agreement. All the more reason for Canada to pursue CETA and TPP. The real issue in all these trade agreements is that they primarily benefit  Corporations and have lead to lower standards of living in the West (via lower wages & benefits and precarious employment). Distribution of wealth and a strong middle class are the answer, and if not addressed will lead to more Trump Administrations and Brexits.