CSMS 63991510·Operational·February 3, 2025·View on csms.cbp.gov ↗

GUIDANCE: Pause on Application of Additional Duties on Imports from Canada

Plain-English explanation

CSMS 63991510 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on February 3, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "GUIDANCE: Pause on Application of Additional Duties on Imports from Canada". 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 # 63991510 - GUIDANCE: Pause on Application of Additional Duties on Imports from Canada U.S. Customs and Border Protection sent this bulletin at 02/03/2025 05:50 PM EST Cargo Systems Messaging Service CSMS # 63991510 - GUIDANCE: Pause on Application of Additional Duties on Imports from Canada Per the President's direction, CSMS message 63988467 is retracted with respect to imports from Canada. CBP will not apply the additional duties outlined in the President’s Executive Order titled Imposing Duties to Address the Flow of Illicit Drugs Across our Northern Border , dated February 1, 2025, at this time. Related message: 63988467 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 63991510?

CSMS 63991510 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "GUIDANCE: Pause on Application of Additional Duties on Imports from Canada". 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 63991510 published?

CBP published CSMS 63991510 on February 3, 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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