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October 2026, question 42

Entry / Entry Summary · Rules of origin and trade programs

Which of the following is NOT an example of “minor processing” when determining the country of origin of imported goods from Canada or Mexico?

  1. Cleaning, including removal of rust, grease, paint, or other coatings
  2. Testing, marking, sorting, or grading
  3. Trimming, filing or cutting off small amounts of excess material
  4. Mounting components such as switches and lights in an enclosure
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CBP's answer: D. D: Mounting components such as switches and lights in an enclosure

Section 102.1(n) lists minor processing, including cleaning (n)(2), trimming or filing off small amounts of excess material (n)(4), and testing, marking, sorting or grading (n)(7). Mounting components such as switches and lights in an enclosure is not on the list, so D is the item that is not minor processing.

Cleaning, including removal of rust, grease, paint, or other coatings; 19 CFR 102.1(n)(2)
Testing, marking, sorting, or grading; 19 CFR 102.1(n)(7)

Search for: Minor processing

CBP's key cites: 19 CFR 102.1(n)

Question and key from CBP's October 2026 exam and answer key. The walk-through is ours; quotes are from the pinned editions in the reference viewer (HTSUS 2026 Basic, 19 CFR 2025 edition).