Twenty Five States Sue Over Trump Replacement Tariffs After Supreme Court Ruling

Twenty-five states have sued the Trump administration over its latest tariff program, arguing that new duties imposed under Section 301 of the Trade Act of 1974 are an unlawful attempt to replace tariffs the U.S. Supreme Court already struck down under IEEPA. The new lawsuit, filed in the U.S. Court of International Trade on August 3, 2026, challenges tariffs of 10% to 12.5% on imports from 59 countries and the European Union that the administration says are tied to forced-labor enforcement failures abroad.

For small business importers, the case is now the next major legal front after the Supreme Court’s February 2026 decision holding that the International Emergency Economic Powers Act does not authorize broad tariffs. The states are not only asking the court to halt the new duties; they are also seeking to preserve the argument that importers and public purchasers should not be left paying replacement tariffs that allegedly reproduce the economic burden of a policy the high court already rejected.

States argue the new tariffs are a workaround after the IEEPA defeat

The state coalition’s central theory is that the administration changed statutory labels, not the underlying tariff policy. The Supreme Court ruling closed one path by rejecting the use of IEEPA as a broad tariff statute. The new lawsuit argues the administration then turned to Section 301 and framed the same wide-ranging trade barriers around forced-labor enforcement, without satisfying the investigation and tailoring requirements that normally accompany that law.

That framing matters because Section 301 is a more established trade tool than IEEPA, but it is not an unlimited delegation of taxing power. The states say the forced-labor rationale is a pretext for restoring a near-global tariff system that courts had already rejected under other authorities. The administration says the tariffs are lawful and necessary to respond to trading partners that fail to stop goods made with forced labor from entering supply chains.

The challenged duties cover a far broader trade base than a conventional product-specific Section 301 action. Reporting on the lawsuit describes the tariffs as applying to goods from 60 trading partners when the European Union is counted alongside 59 countries, with the affected economies responsible for the overwhelming majority of U.S. imports. That scale is why the states are treating the case as a separation-of-powers dispute, not a narrow customs disagreement.

The 25-state coalition turns tariff litigation into a broader affordability case

The earlier IEEPA case included a smaller group of state plaintiffs and several import-dependent businesses. The new challenge is larger and more overtly political: 25 states are now arguing that the replacement tariffs raise costs for consumers, public agencies and businesses while bypassing Congress’s constitutional role over taxes and duties.

That shift changes the story for small businesses. The lawsuit is no longer only about whether individual importers can recover duties they paid under IEEPA. It is about whether states can stop the administration from moving from one tariff statute to another after each court loss, leaving importers to rebuild cost models every few months. For firms with limited working capital, that legal whiplash is itself a business cost.

State attorneys general also have a practical reason to press the issue: state governments buy imported goods directly and indirectly through vendors. If replacement tariffs raise procurement costs, the states may pay more for construction materials, technology, medical equipment, school supplies and other goods even when the immediate customs bill is paid by a private importer.

Small importers remain exposed while the Section 301 case proceeds

The Supreme Court’s IEEPA decision created a refund question for duties already collected under the invalidated emergency tariff orders. The new Section 301 case creates a different problem: duties may keep being assessed while litigation runs. Small importers must therefore plan for two timelines at once. One involves documenting possible refund rights from the old IEEPA regime. The other involves paying, pricing around, or challenging new Section 301 duties that remain operative unless a court blocks them.

This matters because tariff payments are due at the port of entry. A small importer bringing in inventory cannot wait for the Court of International Trade to decide whether a tariff is lawful before paying the duty. The cash leaves the business first; any legal relief comes later, and only if the importer has preserved the records needed to identify the affected entries.

The replacement-tariff structure also complicates sourcing decisions. A business that moved away from one country because of IEEPA tariffs may now find the substitute country covered by the new Section 301 action. That is why importers tracking how Section 301 and other tariff mechanisms stack up for small business importers should treat the state lawsuit as a live operational risk, not just a constitutional-law dispute.

Refunds, injunctions and importer-of-record status are now the practical questions

The states are seeking to stop the new tariff program and obtain relief tied to duties already paid. For private businesses, the practical path is more complicated. A ruling that the Section 301 tariffs are unlawful would not automatically put money back in every importer’s account. Refund rights generally depend on the party listed as Importer of Record, the timing of liquidation and protest deadlines, and the documentation connecting a particular shipment to a particular challenged duty.

That makes customs records the most important short-term asset for small businesses. Importers should preserve CBP Form 7501 entries, HTS classifications, bills of lading, invoices, proof of duty payment and correspondence with brokers for every shipment affected by either the IEEPA program or the replacement Section 301 tariffs. The practical challenges small businesses face in recovering IEEPA tariff refunds apply with equal force to any later Section 301 refund process.

Businesses should also avoid assuming that a state-led lawsuit will protect every private importer automatically. The states can seek broad relief, but individual businesses may still need to file protests, monitor liquidation dates, or participate in refund procedures through customs brokers and trade counsel.

Small businesses should prepare for the 25-state lawsuit while pricing around current duties

• Preserve records for both tariff programs. Keep IEEPA and Section 301 entries in separate folders by country, HTS code, entry date and Importer of Record. The legal theories differ, and a refund or protest process may require separating the two sets of duties.
• Ask your customs broker which entries remain open. Protest rights and refund options depend on liquidation status and filing deadlines. A broker can identify which entries may still be preserved if the Section 301 case produces a favorable ruling.
• Model landed costs with and without the new Section 301 layer. The 10% and 12.5% rates may look modest compared with some IEEPA rates, but they still compress margins when stacked on existing MFN, Section 232 or country-specific duties.
• Review supplier contracts for change-in-law language. If a tariff is later blocked, contracts should explain whether refunds are retained by the importer, shared with customers, or used to offset future orders.
• Do not make permanent sourcing changes based on one court filing. The 25-state lawsuit could move quickly, but replacement tariffs remain in effect unless a court grants relief. Keep sourcing options flexible until the injunction and merits questions are clearer.
• Track state and federal litigation together. The state lawsuit, small-business challenges and any appeals from the Court of International Trade will shape the same cost environment. A ruling in one case may affect strategy in the others.
• Document customer price increases tied to tariffs. If your business raises prices because of the new duties, keep a clear record of which tariff layer caused the increase. That documentation may matter if refunds later become available or if customers ask why prices changed.

The state lawsuit tests whether tariff replacement has limits

The 25-state lawsuit puts the administration’s broader tariff strategy under a new kind of pressure. The Supreme Court already answered the IEEPA question. The next question is whether the government can respond to that defeat by invoking a different statute for a similarly sweeping tariff system, or whether courts will require a tighter connection between the legal authority used and the trade problem identified.

For small importers, the business answer is more immediate than the legal one. Current duties still affect cash flow, pricing and purchase orders. A successful state challenge could change the refund and forward-looking duty picture, but only for businesses that have preserved the records and flexibility needed to act on it. The safest posture is to treat the Section 301 tariffs as real for today’s landed-cost calculations while preparing for the possibility that the 25-state lawsuit becomes the next major refund trigger.