Costco sues Trump administration over sweeping emergency tariff powers

The wholesale giant claims the White House misused emergency authority and warns importers could lose refunds even if duties are ruled unlawful

Costco is suing the Trump administration over its tariffs, arguing that the White House has exceeded its executive authority in instituting tariffs and that it should be entitled to a refund if the tariffs are found unconstitutional.

In a lawsuit filed to the court of international trade last Friday, the retail giant argued the Trump administration had misused the federal law, the International Emergency Economic Powers Act (IEEPA), it cited to impose the tariffs.