Osler, Hoskin & Harcourt LLP are most popular: within Transport topic(s) with Senior Company Executives, HR and Finance and Tax Executives in Canada with readers working within the Banking & Credit, Business & Consumer Services and Insurance industries On February 20, the U.S. Supreme Court determined that the International Emergency Economic Powers Act (IEEPA) does not authorize the President to impose tariffs. The 6-3 decision in Learning Resources Inc., et al. v.