Host: Lalo Solorzano
Guest(s): Arthur O’Meara
Published: September 16, 2026
Length: ~12 minutes
Presented by: Global Training Center
Summary
What separates a good tariff classifier from a great one? According to longtime Global Training Center instructor Arthur O’Meara, it comes down to mastering the fundamentals—and consistently following a process.
In week two of this Simply Trade Tips series, host Lalo Solorzano and Arthur dig into tariff classification and the details trade professionals can’t afford to overlook. Arthur highlights two essential tools: the General Rules of Interpretation (GRIs) and the notes that accompany the Harmonized System, including section notes and chapter notes. Those notes can define materials, establish boundaries, identify exclusions, and ultimately change where a product belongs.
But knowing the rules is only part of the equation. Arthur explains why importers should have a documented tariff classification process that reflects what they actually do—and then follow that process consistently as part of practicing reasonable care.
The conversation also tackles AI and classification. AI can be useful, but Arthur warns against confirmation bias and illustrates why human review and sound classification methodology remain critical.
The takeaway is simple: have a process, follow it, and read the notes.
Main Topic / Discussion
Tariff classification is a game of details.
Arthur identifies two areas that can elevate a classifier’s work: understanding the six General Rules of Interpretationand consistently consulting the relevant section and chapter notes.
Those notes aren't just supplementary reading. They can provide definitions, establish exclusions, and determine whether a product can even be classified in a particular chapter. Arthur illustrates this with materials such as plastic and rubber and explains how something as seemingly straightforward as changing the material of a gasket can affect its classification.
Beyond individual classification decisions, Arthur emphasizes the importance of a documented tariff classification process. The process should reflect what the company actually does and be followed consistently.
The episode closes with a caution about AI. Asking an AI system to justify a classification you've already selected can reinforce your assumptions rather than independently establish that the classification is correct. Arthur's point is not to ignore technology, but to maintain a defensible process and meaningful human review.
Key Takeaways
• Master the GRIs: The six General Rules of Interpretation provide the framework for navigating tariff classification.
• Read the notes: Section and chapter notes can contain definitions, exclusions, and other details that materially affect classification.
• Document your classification process: Arthur recommends creating a process that reflects what your organization actually does and following it consistently.
• Watch for confirmation bias with AI: Don't simply give an AI tool the tariff number you want and ask it to build an argument supporting your conclusion. Use sound classification methodology and human review.
Resources & Mentions
Guest(s):
Arthur O’Meara - LinkedIn
Producer:
Lalo Solorzano
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