L’Oréal, Dyson, and Bausch + Lomb have become the latest major companies to sue the U.S. government for refunds of tariffs imposed under President Donald Trump’s emergency trade measures, following a Supreme Court ruling that declared the duties unlawful. The companies filed complaints in the U.S. Court of International Trade after the Supreme Court ruled 6-3 that Mr Trump exceeded his authority by using the International Emergency Economic Powers Act (IEEPA) to impose tariffs. The decision potentially opens the door to refunds of up to $175bn in tariff collections. The cases add to a growing list of more than 1,400 importers – including Costco and Goodyear – challenging the tariffs. FedEx and skincare brand Sol de Janeiro have also filed suits.