While the Supreme Court weighs whether the import tariffs President Donald Trump imposed this spring using emergency powers are legal in a case brought by several small businesses, Costco has joined dozens of larger firms seeking relief of their own.
“This separate action is necessary,” the retail giant argues in its suit filed in U.S. International Trade Court Friday, because refunds are not guaranteed “for those unlawfully collected tariffs in the absence of their own judgment and judicial relief.”
Costco is considered less exposed to tariffs than many other retailers since just one-third of its sales in the U.S. come from imports and less than half of those come from Canada, China, and Mexico, Barron’s previously reported.




