CSMS #68504361 · Harmonized System Update (HSU) 2609

Brief takeaway: CBP has issued a Harmonized System Update that revises certain HTSUS records tied to duties imposed under a presidential proclamation, which may affect how some entries are classified or filed.

What changed: According to the notice, Harmonized System Update (HSU) 2609 was created on April 29, 2026, and contains six Harmonized Tariff Records and 19 Automated Broker Interface (ABI) records. The notice states these are updates to the HTSUS for duties imposed by presidential proclamation 11021, and points to a published inspection document titled "Harmonized Tariff Schedule of the United States for Duties Imposed by Presidential Proclamation; Technical Corrections."

Who's affected: The notice does not name specific product types, HTS chapters, or countries of origin. It cites duties imposed under presidential proclamation 11021 as the subject of these technical corrections, so importers whose goods fall under that proclamation may find the update relevant.

What to review:
- Review whether your entries involve duties tied to presidential proclamation 11021.
- Confirm with your broker whether the six updated tariff records or 19 ABI records touch codes you file under.
- Check the referenced inspection document ("Technical Corrections") for the specific changes.
- Confirm filing procedures with your broker, or direct questions to CBP's Trade Remedy Branch or HTS administrators as listed.

This is general information, not legal advice and not a compliance determination — confirm specifics with a licensed customs broker or trade counsel.