Global shipping giant FedEx has sued the U.S. government seeking a full refund of emergency tariffs imposed by President Donald Trump, days after the U.S. Supreme Court ruled the duties illegal.

Read also: Trump Imposes 10% Global Tariff Under Trade Act After Supreme Court Ruling

FedEx filed its complaint in the U.S. Court of International Trade, asking for reimbursement of all tariffs it paid under the International Emergency Economic Powers Act (IEEPA), the statute the high court said the administration exceeded in using to justify sweeping tariffs. The lawsuit names U.S. Customs and Border Protection, its commissioner and the United States as defendants.

The law firm representing FedEx is also handling similar tariff refund cases for major importers including Costco, Revlon and EssilorLuxottica.

The move follows last week’s Supreme Court decision striking down Trump’s global tariffs imposed under emergency powers, finding them unconstitutional. The Treasury Department had collected more than $133 billion from tariffs imposed under the emergency law as of December.

Retailers are urging courts to move quickly, arguing the reimbursements would allow companies to reinvest in operations and employees.

President Trump, however, has vowed to continue pursuing tariffs through other legal avenues. After the Supreme Court decision, he signaled he could impose new levies of 10% to 15% and warned foreign governments against playing games with the ruling. In social media posts, he said he could use licenses and other tariff authorities in a much more powerful and obnoxious way.

One option under consideration is Section 122 of the Trade Act of 1974, which allows the president to impose tariffs of up to 15% for 150 days, though any extension would require congressional approval.

Source: IndexBox Market Intelligence Platform