Costco Wholesale Corporation has filed a federal lawsuit challenging President Donald Trump’s emergency tariff orders, setting up a significant legal fight over the scope of executive power and the financial impact on major U.S. retailers. The lawsuit, filed in the U.S. Court of International Trade, seeks refunds for duties Costco has already paid and asks the court to rule that the tariffs were imposed without proper legal authority.
According to the complaint, the Trump administration used the International Emergency Economic Powers Act to levy broad tariffs on imported goods earlier this year. The orders were issued under the argument that foreign trade practices posed a national emergency. Costco argues that the statute does not grant any president the authority to impose tariffs, noting that previous courts have indicated that only Congress can impose duties or taxes on imports.
In its filing, Costco is asking for a declaration that the tariff orders are unlawful, an injunction preventing the government from collecting further duties under those orders, and a refund of all tariffs already paid along with interest. The company is also seeking to prevent liquidation of its past import entries while the case is pending, arguing that liquidation would lock in the duty amounts and eliminate its chance to recover the money even if the court ultimately rules in its favor.
The case reflects a growing trend among import-heavy businesses that rushed to file individual suits before deadlines closed. Even if the tariffs are struck down, companies typically must file their own cases to preserve the right to refunds. Costco joins a number of firms that see the court challenge as necessary protection amid uncertainty over how the government will handle potential repayment.
The stakes are high not just for Costco but for the broader retail sector. Large retailers paid substantial sums under the emergency tariffs, and the outcome could shape consumer pricing, supply-chain stability, and the balance of power between Congress and the executive branch. A ruling in Costco’s favor could limit how far future presidents may go when invoking emergency economic powers and could influence the direction of U.S. trade policy for years.
The lawsuit now moves forward in the Court of International Trade, where judges will weigh the legality of the tariff orders and whether the administration overstepped its authority. The outcome could signal how expansive presidential trade powers remain under existing law and whether companies like Costco will recover what they paid.
