U.S. Agrees to Postpone Tariff Rate Hikes — What Does That Mean for the Stock Market? Posted byAndrew Osterland December 3, 2018 Leave a comment on U.S. Agrees to Postpone Tariff Rate Hikes — What Does That Mean for the Stock Market? At least, President Trump and the U.S. agreed to hold off for another three months before raising tariff rates.