Tariffs, Seizures, and Trade Law: A Practical Guide
International trade is one of the most complex regulatory environments an American business can operate in. Not because the underlying commercial logic is complicated — buy goods, import them, sell them — but because the legal framework layered on top of that commerce involves dozens of federal agencies, thousands of tariff classifications, constantly shifting trade policy, and an enforcement apparatus that has grown steadily more aggressive over the past decade.
Most businesses that run into serious customs problems didn't set out to do anything wrong. They made assumptions — about classification, about valuation, about country of origin — that turned out to be wrong. Or they inherited a compliance approach from a previous operator that was never quite right. Or they got caught in a policy shift that made yesterday's compliant entry today's violation.
This guide is for importers, exporters, logistics professionals, and business owners who want to understand the landscape clearly — and know when bringing in a us customs lawyer is the right move.
Understanding the Tariff Classification System
Every product imported into the United States must be classified under the Harmonized Tariff Schedule of the United States — a massive, hierarchical system of product categories that determines the applicable duty rate for each entry. Getting that classification right is foundational to everything else in the customs compliance process.
Here's where it gets complicated: the HTS has thousands of categories, and many products could plausibly fit into more than one. The question of which heading applies is often genuinely ambiguous, and CBP and importers regularly disagree about the answer. When they disagree, the financial stakes can be significant — the difference between two plausible classifications can mean the difference between a 0% duty rate and a 25% one.
The General Rules of Interpretation govern how classification decisions are made, but applying them to specific products in contested cases requires legal skill, not just familiarity with the tariff schedule. When you add Section 301 and Section 232 tariffs on top of the base duty structure, the financial implications of classification decisions become even larger.
A us customs lawyer who focuses on tariff classification work knows how to build the legal and evidentiary record supporting a favorable classification, how to request binding rulings from CBP to get certainty before you've made thousands of entries, and how to litigate classification disputes before the Court of International Trade when CBP's position is wrong and the stakes justify the fight.
Country of Origin: More Nuanced Than It Sounds
In a world where manufacturing supply chains span multiple countries, country of origin determination is rarely as simple as "where was it made." Substantial transformation rules, specific tariff shift rules under free trade agreements, value-added content thresholds — the analytical framework varies depending on the purpose of the determination (duty treatment, marking requirements, trade agreement preference) and can lead to different answers for the same product depending on which rule applies.
This matters enormously right now. The Section 301 tariffs on Chinese-origin goods — which can reach 25% or higher on many product categories — create powerful financial incentives to demonstrate that goods are not of Chinese origin. CBP is well aware of this incentive and has significantly ramped up scrutiny of country of origin claims, particularly for goods involving Chinese-origin components or manufacturing steps.
An importer who has structured their supply chain to legitimately shift origin away from China, and documented it properly, has a strong legal position. An importer who has made aggressive origin claims without adequate documentation has significant exposure. Understanding which side of that line you're on requires the kind of analysis that a customs attorney with deep experience in this area is best positioned to provide.
When CBP Comes Knocking: Audits and Investigations
CBP's Regulatory Audit program conducts focused assessments and compliance improvement audits of importers across a range of compliance areas. Receiving notice that your company has been selected for an audit is not necessarily cause for alarm — but it is cause for preparation.
The way you handle a CBP audit — the documents you produce, the explanations you provide, the degree to which you demonstrate a functional compliance program — shapes both the outcome of that specific audit and your relationship with CBP going forward. Importers who handle audits well, demonstrating genuine engagement with compliance and a willingness to correct issues that are identified, typically receive better treatment than those who appear defensive, disorganized, or evasive.
Having legal representation during an audit is not about hiding anything. It's about ensuring that your company's interests are protected, that documents are produced appropriately, and that any issues identified are addressed in a legally sound way rather than in a way that creates additional exposure.
The Prior Disclosure Strategy
One of the most powerful tools available to importers who have discovered a compliance problem in their own import history is the prior disclosure mechanism under 19 U.S.C. § 1592(c)(4). A properly filed prior disclosure — voluntarily informing CBP of a violation before it is discovered independently — can reduce the penalty exposure for negligent violations to essentially the unpaid duties, rather than the much larger penalty amounts that can apply when violations are discovered by CBP.
The timing, scope, and form of a prior disclosure filing are all legally significant. Filing too narrow a disclosure — one that doesn't capture all related violations — can leave substantial exposure in place. Filing incorrectly can forfeit the benefits of prior disclosure entirely. Filing at the right moment, with the right scope and supporting analysis, can transform a potentially catastrophic enforcement situation into a manageable one.
This is precisely the kind of work where a customs law firm with genuine depth in customs enforcement — one that has navigated these situations before and knows how CBP responds to different approaches — makes a concrete, measurable difference in outcomes.
Litigation: The Option Most Firms Can't Actually Deliver
Most customs legal matters resolve through administrative proceedings — petitions, protests, audits, and negotiations with CBP. But some matters require litigation, and when they do, the quality of your legal representation in court becomes the determining factor.
The Court of International Trade is a specialized federal court with exclusive jurisdiction over civil actions arising from customs and international trade laws. Litigating there effectively requires not just general civil litigation skills, but deep familiarity with the court's procedures, the applicable legal standards, and the specific dynamics of customs disputes.
Many firms that hold themselves out as customs law practices have limited or no actual courtroom experience. Stein Shostak Shostak Pollack & O'Hara is explicitly different on this point — the firm has the experience and the track record to win in court, which matters both in actual litigation and in every negotiation conducted in its shadow.
What to Look for in a Customs Legal Partner
When evaluating legal representation for customs and trade matters, a few criteria stand out as particularly telling. Does the firm practice customs law exclusively, or is it a sideline to a broader commercial practice? Exclusive focus matters — the regulatory landscape moves too quickly for part-time attention to keep pace. Does the firm have genuine litigation experience, or does it primarily handle transactional and administrative work? Has it built relationships with CBP and the broader trade law community over years of consistent practice?
Stein Shostak Shostak Pollack & O'Hara checks all of these boxes. Based in Los Angeles with a presence in Shanghai, the firm serves importers and exporters operating in the US market with the depth of focus and the breadth of capability that complex customs matters demand.
Get the Legal Guidance Your Import Program Deserves
If your business is actively importing into the United States — or planning to — the legal framework around that activity deserves serious, expert attention. Visit steinshostak.com or call (213) 630-8888 to connect with the team at Stein Shostak Shostak Pollack & O'Hara. The right us customs lawyer doesn't just solve problems. They help you build an import program that's defensible, efficient, and positioned to compete in a demanding trade environment.
