Costco has filed a lawsuit against the administration of United States President Donald Trump in efforts to get a full refund on the tariffs the company paid this year before the US Supreme Court weighs in on the legality of tariffs.

The lawsuit, filed on Friday , also calls to block the collection of import duties.

Costco said that the tariffs need to be immediately addressed because there is a December 15 deadline to refund taxes that have already been paid. The lawsuit alleges that US Customs and Border Protection has denied the company’s request to extend the deadline.

Costco did not specify the amount that it believes it should be refunded for.

“Importers that have paid IEEPA duties, including Plaintiff, are not guaranteed a refund for those unlawfully collected tariffs in the a

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