1. INTRODUCTION
Tariffs have returned to the center of U.S. trade policy discussions in 2026. Importers, customs brokers, and supply chain professionals are closely watching developments involving tariffs imposed under emergency authorities and the ongoing legal challenges surrounding them.
Several cases before the U.S. Court of International Trade and the U.S. Court of Appeals for the Federal Circuit are examining whether certain tariffs imposed under the International Emergency Economic Powers Act (IEEPA) fall within the statutory authority granted to the President.
Because tariffs directly affect import costs, compliance obligations, and duty recovery opportunities, importers should understand the current legal landscape and what actions may be required in the coming months.
2. REGULATORY AND LEGAL CONTEXT
Tariffs in the United States are generally imposed under statutory authorities delegated by Congress. The The International Emergency Economic Powers Act (IEEPA) allows the President of the United States to regulate economic transactions during a declared national emergency involving foreign threats. The law has traditionally been used to impose sanctions, block assets, or restrict financial transactions.
It is administered primarily by the U.S. Department of the Treasury, particularly through the Office of Foreign Assets Control (OFAC).
However, several lawsuits have challenged whether IEEPA provides authority to impose tariffs. Plaintiffs in these cases argue that tariff authority is reserved for Congress under the U.S. Constitution and specific trade statutes, such as the Trade Act of 1974.
These cases are currently working their way through the federal court system, including the U.S. Court of International Trade, which has jurisdiction over most U.S. trade disputes.
3. HOW TARIFF LITIGATION MOVES THROUGH THE COURTS
Trade cases generally follow a structured judicial path:
- Initial litigation in the U.S. Court of International Trade
- Appeals heard by the U.S. Court of Appeals for the Federal Circuit
- Potential review by the Supreme Court of the United States
Even when a court issues a decision affecting tariffs, the process often continues through appeals. During this time, tariffs frequently remain in place until final judicial resolution or government policy changes.ms law, not all entries will be eligible for automatic refunds.
4. IMPACT ON U.S. IMPORTERS.
Tariff litigation does not automatically eliminate duty obligations. Importers must continue to comply with U.S. customs requirements until U.S. Customs and Border Protection (CBP) issues formal implementation instructions.
This means:
• Entries must continue to be filed with the correct tariff classifications
• Duties must be paid as assessed
• Brokers must follow existing ACE procedures
Only after CBP releases formal guidance will brokers know whether duties will be removed, adjusted, or subject to refund procedures.
5. LIQUIDATION AND REFUND CONSIDERATIONS
One of the most important aspects of tariff litigation involves the liquidation status of entries.
Under U.S. customs law, once an entry is liquidated and the protest period expires, the entry generally becomes final. This principle is governed by 19 U.S.C. §1514.
As a result, potential duty recovery may depend on whether entries are:
• still unliquidated
• liquidated but within the 180 day protest period
• already final and beyond the protest deadline
Importers should review ACE data and liquidation dates carefully to determine whether legal remedies may still be available.
6. WHAT IMPORTERS SHOULD BE DOING NOW
Companies affected by tariff litigation should consider the following steps:
- Review entry summaries associated with the tariff programs under litigation
- Identify entries that remain unliquidated
- Confirm liquidation dates for entries that have finalized
- Monitor CBP Cargo Systems Messaging Service (CSMS) announcements for official guidance
- Consult customs brokers or trade counsel regarding potential protests or administrative remedies
Proactive analysis is essential because protest deadlines are strict and cannot be extended once they expire.
7. TARIFFS THE REMAIN IN EFFECT
While emergency tariff authorities are under legal scrutiny, other tariff programs remain fully enforceable.
Examples include measures implemented under:
• Section 301 of the Trade Act of 1974 addressing unfair trade practices
• Section 232 of the Trade Expansion Act of 1962 involving national security concerns
These tariffs continue to be administered by Office of the United States Trade Representative and enforced by U.S. Customs and Border Protection.
• Importers should not assume that all tariffs are affected by current litigation.
8. STRATEGIC CONSIDERATIONS FOR SUPPLY CHAINS
Tariff uncertainty can significantly affect supply chain planning and import pricing strategies.
Companies may consider:
• reviewing sourcing strategies
• evaluating tariff engineering opportunities
• monitoring developments in U.S. trade policy
• ensuring compliance with evolving customs requirements
Working with experienced customs brokers helps ensure that importers remain compliant while identifying potential duty recovery opportunities when legal developments occur.
9. Conclusion
Tariff policy remains one of the most closely watched aspects of U.S. trade regulation. Ongoing litigation surrounding tariffs imposed under the International Emergency Economic Powers Act highlights the continuing debate over the scope of presidential authority in international trade policy.
While these legal challenges move through the federal court system, including the U.S. Court of International Trade and the U.S. Court of Appeals for the Federal Circuit, importers must continue to comply with current tariff requirements enforced by U.S. Customs and Border Protection.
For many companies, the most important factor will not only be the outcome of the litigation but also the liquidation status of their entries, the applicable protest deadlines, and the official guidance issued by CBP through operational channels such as the Cargo Systems Messaging Service.
Importers that proactively review their entry data, monitor regulatory developments, and work closely with experienced customs brokers will be better positioned to respond quickly if duty adjustments or recovery opportunities arise.
As tariff policies evolve and legal challenges continue, maintaining strong compliance practices and staying informed through reliable sources will remain essential for companies engaged in international trade.
Since 1968, S. J. Stile Associates Ltd. has supported importers with customs compliance, regulatory guidance, and supply chain expertise across complex and changing trade environments.
10. FINAL THOUGHTS
Lithium batteries create customs clearance risk less because they are “difficult,” and more because they expose weak spots in trade data discipline. When descriptions are generic, when documents conflict, or when hazmat related manifest elements are missing where applicable, shipments slow down.
The most effective risk reduction strategy is to treat lithium battery moves as a documentation controlled process. Use precise cargo descriptions aligned with CBP guidance, keep classification support in the file, and maintain an audit ready record set that can be produced quickly. This approach protects cycle time, reduces avoidable holds, and supports defensible compliance.
Frequently Asked Questions
Tariffs, Court Challenges, and Importer Responsibilities
1. What tariffs are currently being challenged in U.S. courts?
Several lawsuits are challenging tariffs imposed under the International Emergency Economic Powers Act (IEEPA).
Plaintiffs argue that the statute does not authorize the President to impose tariffs, because tariff authority is traditionally granted by Congress through trade legislation.
These cases are being reviewed by the U.S. Court of International Trade, the federal court responsible for international trade disputes.
2. Do importers still have to pay tariffs while court cases are ongoing?
Yes.
Until official instructions are issued by U.S. Customs and Border Protection (CBP), importers must continue to declare and pay duties according to current tariff rules.
Court litigation does not automatically stop duty collection unless the court specifically orders a suspension.
3. If a tariff is invalidated, will importers automatically receive refunds?
Not necessarily.
Refund eligibility often depends on the liquidation status of the entry. Under U.S. customs law, once an entry is liquidated and the protest deadline expires, the entry generally becomes final.
This principle is governed by 19 U.S.C. §1514, which establishes that liquidation decisions become final unless protested within the legal time frame.
4. What is liquidation in customs processing?
Liquidation is the final calculation of duties owed on an entry.
After an entry is filed with CBP, the agency reviews the information and eventually finalizes the duty amount. Once liquidation occurs, the entry becomes legally binding unless a protest is filed.
Liquidation status can be reviewed through ACE reports or broker systems.
5. How long do importers have to file a protest?
Importers generally have 180 days from the date of liquidation to file a protest with CBP.
If the protest period expires, the entry typically becomes final and cannot be reopened under normal circumstances.
6. Which entries are most likely to qualify for refunds?
Entries that remain unliquidated are usually the strongest candidates for duty refunds.
If a court ruling removes a tariff program, CBP may reliquidate unliquidated entries and refund duties that were previously paid.
7. Are other U.S. tariff programs affected by these legal challenges?
No.
Tariffs imposed under other statutory authorities remain in force, including measures implemented under the Trade Act of 1974 and national security tariffs under Section 232.
These programs continue to be administered by the **Office of the United States Trade Representative and enforced by CBP.
8. What should importers do right now?
Importers should consider:
• reviewing entry summaries in ACE
• identifying entries that remain unliquidated
• confirming liquidation dates for past imports
• monitoring CBP CSMS announcements for official guidance
Working with an experienced customs broker helps ensure that importers remain compliant while identifying potential duty recovery opportunities.
12. REFERENCES
International Emergency Economic Powers Act (50 U.S.C. §§ 1701–1707)
Legal authority governing presidential powers during national emergencies involving foreign threats.
https://uscode.house.gov/view.xhtml?path=/prelim@title50/chapter35&edition=prelim
U.S. Court of International Trade
Federal court with jurisdiction over civil actions arising from U.S. customs and international trade laws.
U.S. Customs and Border Protection – Trade and Tariff Resources
Official CBP guidance on customs procedures, tariff administration, and import compliance.
19 U.S.C. §1514 – Protest Against Decisions of Customs Service
Statutory framework governing protests and the finality of customs liquidation decisions.
https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title19-section1514
Office of the United States Trade Representative – Section 301 Investigations
Information regarding tariffs imposed under Section 301 of the Trade Act of 1974.
https://ustr.gov/issue-areas/enforcement/section-301-investigations
Office of Foreign Assets Control – Sanctions Programs and Country Information
U.S. Treasury authority responsible for administering economic sanctions under IEEPA.
Trade Act of 1974
Major U.S. trade statute providing authority for trade remedies such as Section 301 tariffs.
https://www.govinfo.gov/content/pkg/COMPS-1000/pdf/COMPS-1000.pdf
✔ These references are appropriate for a professional customs brokerage blog because they rely on primary government and statutory sources, which strengthens credibility and compliance accuracy.
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