Costco files federal challenge to Trump emergency tariff orders, seeks refunds before Dec. 15 deadline
Costco has sued the U.S. government in the U.S. Court of International Trade, asking to block President Trump’s emergency tariff orders, recover millions paid in duties, and halt liquidation deadlines that could bar refunds by Dec. 15, 2025.
- Who: Costco Wholesale Corporation.
- What: Lawsuit seeking to block, refund and stop enforcement of emergency tariffs.
- Why it matters: Costco argues the IEEPA does not authorize tariffs and that a Dec. 15, 2025 liquidation cutoff could prevent duty recoveries.
- Broader stakes: Prior lower-court rulings struck down similar tariffs and the Supreme Court recently heard consolidated challenges.
Why Costco sued now
Costco alleges it has paid millions in emergency tariffs imposed under the International Emergency Economic Powers Act (IEEPA (50 U.S.C. §1701 et seq.)). The company filed in the U.S. Court of International Trade because multiple import entries are nearing final liquidation, the customs process that fixes duty amounts and can sharply limit refund rights.
Relief Costco asks the court to grant
- Declare the Trump tariff orders unlawful.
- Block U.S. Customs and Border Protection (CBP) from applying the tariffs to Costco’s shipments going forward.
- Order refunds of all duties Costco paid under the emergency tariff program, plus interest.
- Suspend liquidation of Costco’s tariff-affected imports to preserve recovery rights.
- Permanently bar CBP from enforcing the challenged tariff codes for Costco’s imports.
Legal background: IEEPA and prior rulings
The emergency tariffs at issue were issued in 2025 under presidential declarations citing threats tied to illegal drug trafficking, border activity and trade imbalances and targeted imports from countries including China, Mexico and Canada. The administration invoked the IEEPA (50 U.S.C. §1701 et seq.) as its legal basis.
Federal courts have already questioned that approach. The U.S. Court of International Trade and the U.S. Court of Appeals for the Federal Circuit previously found that IEEPA does not authorize the imposition of tariffs, and several importers won rulings striking down the orders. Those rulings, however, do not automatically guarantee refunds to other importers whose entries are or will be liquidated.
The issue reached the U.S. Supreme Court in November 2025 in consolidated cases involving multiple importers; the high court’s decision will affect the pace and scope of relief across pending suits, including Costco’s.
Costco’s alternate constitutional claim
As a backup, Costco argues that even if IEEPA were read to authorize tariffs, the statute would be unconstitutional because it unlawfully transfers Congress’s tariff-setting power to the president without clear limits. That separation-of-powers claim provides a second path for relief if the statutory challenge fails.
The practical problem: liquidation deadlines and cash flow
A central urgency is the December 15, 2025 liquidation deadline. Liquidation is the final accounting step in the customs process: once an entry is liquidated, the duty amount is fixed and the ability to recover unlawful charges is greatly reduced. Costco reports at least one entry already liquidated and many others near the cutoff.
“If entries are liquidated before a judgment in Costco’s favor, the company could lose the ability to recover duties it says were wrongfully collected.”
Industry pushback and related cases
Costco joins apparel makers, auto parts suppliers and consumer-goods distributors in challenging the emergency tariffs. Plaintiffs such as Learning Resources, Inc. and V.O.S. Selections, Inc. obtained important lower-court wins that helped bring the issue to the Supreme Court—but those rulings left unresolved whether individual companies can recover duties already paid.
Costco’s suit requests relief specific to its imports—refunds and an order preventing CBP from further enforcement as to Costco—arguing that without judicial intervention businesses will absorb costs and pass them to consumers.
Implications for Hesperia, California
Economic impact
Local retailers and small distributors in Hesperia rely on stable prices for household items and seasonal stock. If Costco recovers duties and the tariffs are struck down, prices for affected goods could fall. If tariffs stand or refunds are delayed, local businesses could face sustained higher costs and squeezed margins.
Political consequences
For conservative voters who prioritize limited government and separation of powers, this case tests executive authority. The litigation also ties into local concerns about border enforcement because the administration cited border activity and drug trafficking in declaring the emergency.
Social effects
Price swings from tariffs affect working families at the checkout. Hesperia residents who budget tightly may feel impacts on bulk goods, electronics and apparel. If refunds are returned to large retailers, shoppers will watch whether savings are passed along.
Cultural relevance
Costco’s membership model matters in inland Southern California where value is a priority. The lawsuit also resonates with voters concerned about executive actions that may bypass Congress.
Practical applications for residents and local businesses
- Small importers should check entries and deadlines now; consult customs counsel or brokers to preserve refund rights—see CBP guidance on liquidation.
- Consumers should monitor local prices; court-ordered refunds may take time to reach store shelves.
- Local officials and business groups can press federal agencies for clarity to limit regional supply-chain disruption.
Source attribution and where to read the filings
This article is based on Costco’s complaint filed in the U.S. Court of International Trade, public lower-court decisions challenging the use of the IEEPA (50 U.S.C. §1701 et seq.), and CBP guidance on liquidation (CBP guidance on liquidation). The Supreme Court docket for the consolidated cases is available at the U.S. Supreme Court.
Where to read more
- U.S. Court of International Trade
- IEEPA (50 U.S.C. §1701 et seq.)
- CBP guidance on liquidation
- U.S. Supreme Court
Reporting note: The coverage draws on public filings and court decisions. The Supreme Court’s forthcoming opinion in the consolidated cases will shape how broadly relief may extend to other importers.
