International Trade Customs

International Trade Customs - International trade, tariff & customs attorneys. CBP defense. Call (818) 514-7680.

International Trade & Customs Law Services

Comprehensive customs and tariff defense for California importers at the Port of Los Angeles, Port of Long Beach, and all U.S. ports of entry. Services include CBP audit defense, tariff classification, customs valuation, Section 301/232/IEEPA tariff strategy, UFLPA forced labor compliance, duty drawback recovery, and Court of International Trade litigation.

Current Tariff Landscape

With effective tariff rates at historic highs, California businesses need experienced trade counsel. We handle Section 301 China tariffs, Section 232 steel/aluminum tariffs, IEEPA tariff refund claims, and reciprocal tariff compliance.

Free consultation for importers: (818) 514-7680.

Filed Court of International Trade Actions

Trembach Law Firm is not only admitted to the U.S. Court of International Trade — it has filed 3 complaints there. The actions are docketed at the Court of International Trade as 26-02506, 26-02846, 26-04095. Anatolii Trembach is admitted to practice before the Court of International Trade and is licensed in California, State Bar #349304, verifiable at apps.calbar.ca.gov.

This matters for IEEPA refunds specifically. The Court of International Trade has ordered CBP to reliquidate and refund on plaintiffs’ entries, and CBP’s CAPE Phase 3 for finally liquidated entries is likewise available only to importers who are plaintiffs at the Court. An importer who never filed has no confirmed, self-executing mechanism. Choosing counsel who has actually filed at that court, rather than counsel who only describes the process, is therefore a practical question and not a marketing one.

Jurisdiction over these actions rests on 28 U.S.C. § 1581, and the window to sue runs under 28 U.S.C. § 2636(i). No particular outcome is promised or guaranteed.

Fees, Costs and Case Results

Representation in these matters is offered on a contingency basis covering attorney fees only: there is no attorney fee unless we recover, and clients remain responsible for case costs, such as court filing and service fees. The specific terms that apply to a matter are set out in the written fee agreement for that matter.

Where this site refers to a verdict, settlement or court order, that result was dependent on the facts of that case, and results will differ if based on different facts. Past results do not predict or guarantee the outcome of any other matter, and no particular outcome is promised or guaranteed.

Frequently Asked Questions

What international trade and customs services do you offer?

We provide comprehensive services including CBP audit defense, tariff classification, customs valuation, country of origin determinations, UFLPA forced labor compliance, Section 301/232 tariff strategies, export controls (ITAR/EAR), sanctions compliance, antidumping/countervailing duty defense, and customs seizure defense.

Can I get a refund of IEEPA tariffs after the Supreme Court ruling?

In Learning Resources, Inc. v. Trump the Supreme Court held the IEEPA tariffs unlawful, and CBP stopped collecting IEEPA duties on goods entered on or after February 24, 2026. Importers who already paid IEEPA duties may pursue refunds through CBP protests (19 U.S.C. § 1514, 180-day deadline), the CAPE refund declaration process in ACE, and, if necessary, the U.S. Court of International Trade — generally with statutory interest. Deadlines are strict, so confirm your entries promptly.

What is a CBP Focused Assessment and how should I respond?

A Focused Assessment is a CBP audit of an importer’s internal controls and compliance with the customs laws. It opens with a Pre-Assessment Survey questionnaire. A strong response is built on documented reasonable-care procedures; a weak one can escalate into penalties under 19 U.S.C. § 1592. We represent importers through every stage of the audit.

How long do I have to file a customs protest?

Under 19 U.S.C. § 1514, a protest generally must be filed within 180 days of liquidation. Missing that deadline usually forecloses administrative relief, although a U.S. Court of International Trade action under 28 U.S.C. § 1581 may remain available in limited circumstances.

When should I file a customs prior disclosure?

A prior disclosure under 19 U.S.C. § 1592(c)(4) is a voluntary report to CBP of a customs violation made before CBP discovers or begins investigating it. A valid prior disclosure caps a negligence-tier penalty at interest on the lost duties — often a reduction of more than 90% against the statutory maximum.

Which California ports do you serve?

We serve importers and exporters at all major California ports including the Port of Los Angeles, Port of Long Beach, Port of Oakland, and Port of San Diego. Our Calabasas office provides rapid response to CBP matters throughout the state, and because customs and trade law is federal we also represent California companies at ports nationwide.

What government agencies do you work with for trade matters?

We regularly work with U.S. Customs and Border Protection (CBP), the Bureau of Industry and Security (BIS), the Directorate of Defense Trade Controls (DDTC), the Office of Foreign Assets Control (OFAC), and the U.S. International Trade Commission (ITC) on behalf of our clients.

Do you handle Section 301 China tariff matters?

Yes. We provide comprehensive Section 301 services including exclusion analysis, duty-mitigation strategies, tariff-classification optimization, and representation before USTR and CBP. Section 301 and Section 232 duties were not affected by the IEEPA ruling and remain in force.

Contact Trembach Law Firm

Trembach Law Firm, APC

27001 Agoura Road, Suite 350, Calabasas, CA 91301

Phone: (818) 514-7680

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