CSMS #68609998 · Harmonized System Update (HSU) 2610
Brief takeaway: CBP has issued a Harmonized System Update that loads tariff and ABI records tied to Section 232 measures for certain USMCA-qualifying medium- and heavy-duty vehicles.
What changed: According to the notice, Harmonized System Update (HSU) 2610 was created on May 7, 2026, and contains two harmonized tariff records and four ABI records. The notice states these updates relate to Section 232 USMCA-Qualifying Medium- and Heavy-Duty Vehicles (MHDVs) HTS updates and points to related CSMS #68559236 for more information.
Who's affected: The notice cites Section 232 measures affecting medium- and heavy-duty vehicles (MHDVs) that may qualify under USMCA. Specific HTS codes, rates, and countries of origin are not stated in this notice itself; it refers readers to the related CSMS message for detail.
What to review:
- Review whether your imported vehicles may fall within the medium- and heavy-duty vehicle categories referenced by the Section 232 updates.
- Check the related CSMS #68559236 for the specific HTS classifications and program details.
- Confirm with your licensed customs broker whether the two tariff records and four ABI records affect your ABI/entry filing.
- Review whether USMCA-qualification claims may be relevant to how these Section 232 provisions are reported for your goods.
This is general information, not legal advice and not a compliance determination — confirm specifics with a licensed customs broker or trade counsel.
Official notice
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- CSMS #68762890 · GUIDANCE: Implementation of Certain Tariff-Related Elements of the Trade and Security Agreement Between the Taipei Economic and Cultural Representative Office and the American Institute in Taiwan
- CSMS #68290408 · Harmonized System Update (HSU) 2607
- CSMS #68554727 · GUIDANCE: Technical Corrections to Section 232 Duties on Imports of Aluminum, Steel, and Copper
- CSMS #68559236 · GUIDANCE: Applying Section 232 Import Duties on USMCA-Qualifying Medium-and Heavy-Duty Vehicles (MHDVs)
- CSMS #68402148 · New ACE Drawback Error Validations Set to Deploy to PROD April 21, 2026
This update is a general educational summary based on public CBP CSMS / Federal Register information. It is not legal advice, customs broker advice, a final classification, duty determination, entry instruction, or compliance determination. Importers should confirm applicability, effective dates, HTSUS/Chapter 99 reporting, rates, refunds, PSC procedures, and filing instructions with their licensed customs broker, trade counsel, and/or CBP.