Affiliates of at least nine Japanese firms, including Toyota Tsusho Corp. and Sumitomo Chemical Co., have sued the U.S. government for full refunds of the additional tariffs they had to pay this year, in the event of the Supreme Court ruling the levies illegal.According to recent court filings, the U.S. affiliates argue that the imposition of "reciprocal" tariffs by the administration of President Donald Trump, using the International Emergency Economic Powers Act without congressional approval, is unlawful.Their complaints were filed with the U.S. Court of International Trade in New York a…READ FULL ARTICLE