Why the supreme court's tariffs ruling is a win for world trade – but also tricky

It is refreshing to witness the US supreme court recover its spine and stand up to Donald Trump’s most extreme caprices. The 6-3 decision on Friday to strike down his barrage of tariffs on imports from virtually everywhere based on the preposterous argument that they addressed national emergencies will reassure the world that the US’s system of government – based on the separation of powers, checks and balances, and the rule of law – has not collapsed entirely.But let’s hold the (imported) champagne. The co ...