“IEEPA nowhere mentions tariffs, duties, imposts, or taxes, and no other President in the statute’s nearly 50-year history has claimed that it authorizes tariffs,” the companies added in a filing with the appeals court.

President Donald Trump has been getting his way on trade, strong-arming the European Union, Japan and other partners to accept once unthinkably high taxes on their exports to the United States. But his radical overhaul of American trade policy,