CSMS 66355809·Operational·September 26, 2025·View on csms.cbp.gov ↗

NMFS Certification of Admissibility Update: Newly Designated Officials for the Government of Mexico

Plain-English explanation

CSMS 66355809 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on September 26, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "NMFS Certification of Admissibility Update: Newly Designated Officials for the Government of Mexico". CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Message body

Full text as published by U.S. Customs and Border Protection

CSMS # 66355809 - NMFS Certification of Admissibility Update: Newly Designated Officials for the Government of Mexico U.S. Customs and Border Protection sent this bulletin at 09/26/2025 12:54 PM EDT Cargo Systems Messaging Service CSMS # 66355809 - NMFS Certification of Admissibility Update: Newly Designated Officials for the Government of Mexico The National Marine Fisheries Service (NMFS) is issuing this message to inform industry of an updated list of designated officials from the Government of Mexico to sign Certifications of Admissibility (COAs) for certain seafood products imported into the United States. The new list of Government of Mexico officials is available at the NMFS website: https://www.fisheries.noaa.gov/s3/2025-07/OFFICIALS_DESIGNATED_CERTIFICATIONS_ADMISSIBILITY_July2025.pdf Previous guidance from Mexico’s Comisión Nacional de Acuacultura y Pesca (CONAPESCA) allowed for centralized COA validation in cases where no authorized validating official was assigned in the Mexican state where the COA was issued. CONAPESCA updated its protocols with the addition of the designated officials for the Mexican states of Baja California and Sonora, so that COAs must now be signed by their local authorized official. Entries from Mexico are inadmissible if using a designated HTS code not accompanied by the Certification of Admissibility. The list of HTS codes is available online: https://www.fisheries.noaa.gov/s3/2024-10/FY25-MX-MMPA-HTS-Codes.pdf . Questions on these import restrictions, the affected fish products, or Certification of Admissibility can be directed to NMFS at trademonitoring.support@noaa.gov. Related Message Number(s): CSMS# 19-000303 (2019), CSMS #51756875 (2022), CSMS # 62775668 (2024), CSMS# 64529154 (2025), and CSMS # 65259646 (2025) Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 66355809?

CSMS 66355809 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "NMFS Certification of Admissibility Update: Newly Designated Officials for the Government of Mexico". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 66355809 published?

CBP published CSMS 66355809 on September 26, 2025. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

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