As many other companies have been doing in recent months, Chinese automaker BYD filed a lawsuit in late January against the U.S. government, challenging President Trump's use of the International Emergency Economic Powers Act (IEEPA) to impose tariffs, and requesting a refund of all tariffs paid since last April. This action is designed to ensure that if the U.S. Supreme Court strikes down the tariffs, BYD will be able to obtain refunds of the amounts paid.