There are complaints that Canada’s increasing demands in the NAFTA renegotiations will drag the talks into 2018, an election year in both the U.S. and Mexico. Self-Imposed Work The Trump administration is understandably taking credit for Vietnam’s decision to end a nearly year-old fumigation requirement that has stymied U.S. sales of wheat, corn and DDGS to that country. American negotiators used intensive scientific discussion to dissuade quarantine officials in Hanoi from the requirement. However, industry officials argue that the situation likely would have ended more quickly and with less effort had the U.S. not backed out of the Trans-Pacific Partnership (TPP) and its more vigorous obligations to sound science-based sanitary and phyt...