Court ruling could derail Trump's Greenland tariff gambit

Fortune reports the Supreme Court could rule the president lacks authority under the International Emergency Economic Powers Act to impose tariffs on routine international trade, potentially nullifying Trump’s threat to tariff Denmark and others to pressure a Greenland purchase. If the ruling goes against the White House, Trump’s Greenland plan would face a major hurdle and he’d need to pursue different tariffs, with analysts from UBS, ING and Deutsche Bank weighing the timing and impact as rulings are expected this week.