A retail giant takes on a former president — and the outcome could reshape U.S. trade policy forever. Costco has filed a lawsuit against the Trump administration, demanding both a halt to newly imposed import tariffs and a full refund for the millions it has already paid in extra taxes. The company argues that these tariffs — enacted earlier this year through executive orders — were imposed unlawfully and without proper authority.
At the heart of the issue is whether the president can unilaterally impose tariffs without congressional approval. Costco’s legal team has asked the U.S. Court of International Trade to declare that the president lacked such authority under the International Emergency Economic Powers Act (IEEPA). This act, originally designed for national security emergencies, was invoked by Trump in February to levy sweeping tariffs worldwide — bypassing the usual legislative process.
But here’s where it gets controversial: can a law intended for sanctions and emergencies really justify import taxes on everyday products like clothing and furniture? The Supreme Court is now weighing that very question, and the outcome could determine whether companies like Costco ever get their money back.
According to Devashish Mitra, professor of economics and global affairs at Syracuse University, the company’s fate “depends entirely on whether the Supreme Court concludes the president had legal authority to impose tariffs.” If the Court sides with Costco, the case could open the floodgates for other refund claims. And Costco isn’t alone — major brands including Kawasaki and Revlon have also filed suits seeking reimbursement for tariffs they consider unconstitutional.
Critics argue that while national security could justify certain targeted tariffs, blanket taxes on everyday imports cross a legal and ethical line. As Mitra explained, “A sweeping tariff on all imports from one or several countries, issued with a single stroke of the president’s pen, will be nearly impossible to justify under existing trade laws.”
Tariffs are essentially taxes placed on products entering the U.S. Costco, which relies heavily on imported goods, feels the pain acutely. Roughly one-third of its U.S. sales come from foreign products, with China, Canada, and Mexico serving as its main sources. Many of those Chinese imports now face tariffs as high as 145%, significantly raising costs and squeezing margins.
Supporters of the tariffs, however, see them as a necessary tool to reduce the trade deficit and strengthen domestic manufacturing. Trump himself proudly stated that tariffs generated about $205 billion in federal revenue by October 2025. Yet that figure comes at a steep cost: disrupted supply chains, rising prices, and frustrated retailers scrambling to adapt.
Some companies have relocated manufacturing to countries not targeted by tariffs, while others have started offering cheaper alternatives to offset price hikes. Still, many have little choice but to pass at least part of the cost onto shoppers. The National Bureau of Economic Research reports that prices for imported goods surged nearly twice as fast as domestically made products after March’s broad tariff rollout.
Costco’s CEO, Ron Vachris, assured investors that the company is working to “mitigate tariff impacts,” emphasizing that raising prices would be their last resort. “If we do that,” he said during a September earnings call, “we’ll be the last one to go up and the first one to go down whenever we can.”
The legal and economic stakes couldn’t be higher. If Costco wins, it could set a precedent limiting presidential power over trade policy — a move that would delight critics but alarm those who favor unilateral authority in times of global uncertainty.
And this is the part most people miss: this fight isn’t just about one retailer or administration. It’s about defining where executive power ends and congressional oversight begins in shaping America’s economic future.
What do you think — should a president be able to impose sweeping tariffs without congressional approval, or does that overstep constitutional limits? Share your thoughts and join the debate below.
