Tandom
About
Sign inCreate a free account →
Tandom

The building blocks of global trade.

hello@tandom.ai

Proud to partner with

Microsoft for Startups

NVIDIA

Inception Program

Products

  • Tariff Calculator
  • AD/CVD Intelligence
  • HTS Classification
  • Document Intelligence
  • Entry Filing
  • Excel Plugin
  • Email Plugin

Catalogs

  • AD/CVD Catalog
  • HTS Catalog
  • Pending Investigations Directory
  • Rate Change Feed

Developers

  • API
  • AI Agent Workflows
  • MCP Connector
  • API Reference
  • API Pricing
  • API Changelog

Resources

  • Resource Center
  • Guides
  • Roadmap

Company & Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Acceptable Use

© 2026 Fintora Technologies, Inc. d/b/a Tandom. All rights reserved.

Plain-English explanationMessage bodyFrequently asked questionsLearn more
  1. AD/CVD Catalog
  2. ›
  3. CSMS
  4. ›
  5. CSMS 50138288
CSMS 50138288·Operational·November 19, 2021·View on csms.cbp.gov ↗

CBP Guidance to Alleviate Supply Chain Disruptions in British Columbia, Canada, November 18, 2021

Plain-English explanation

CSMS 50138288 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (operational), published on November 19, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "CBP Guidance to Alleviate Supply Chain Disruptions in British Columbia, Canada, November 18, 2021". 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 #50138288 - CBP Guidance to Alleviate Supply Chain Disruptions in British Columbia, Canada, November 18, 2021 U.S. Customs and Border Protection sent this bulletin at 11/19/2021 11:42 AM EST   Cargo Systems Messaging Service CSMS #50138288 - CBP Guidance to Alleviate Supply Chain Disruptions in British Columbia, Canada, November 18, 2021 Issue: Due to extreme weather conditions in British Columbia, Canada, that have caused flooding, landslides, road closures, and other supply chain disruptions Canadian domestic truck carriers may need to transit through the U.S. to reach destinations in Canada.  Any Canadian carriers that currently operate between the US and Canada as well as domestically are encouraged to follow the standard procedures for transit, including the advance filing of an electronic truck manifest and utilization of an in-bond or in-transit transaction.  This will facilitate crossing and decrease delay at the border that will be caused by these temporary measures. The requirements below are designed to be utilized by Canadian domestic truck carriers that don’t normally cross the border in the normal course of their business.  Any Canadian carriers that currently operate between the US and Canada as well as domestically are expected to follow the standard procedures for transit, including the advance filing of an electronic truck manifest and utilization of an in-bond or in-transit transaction.  This will facilitate crossing and decrease delay at the border that will be caused by these temporary measures.  CBP will exercise maximum flexibility regarding these domestic freight shipments.  It is recommended that carriers have normal clearance documents readily available such as bill of lading, invoices, etc. to facilitate clearance.  For more information on electronic manifesting and bonds see the following link: https://www.cbp.gov/document/technical-documentation/ace-bond-guide-electronic-truck-manifest https://www.cbp.gov/document/guides/truck-manifest-create-manifest and https://www.cbp.gov/document/guides/truck-manifest-create-manifest-french   General rules: The follow requirements are available to Canadian domestic truck carriers that do not have electronic manifesting capabilities or ability to file as a bonded carrier.  The area of operations will be initially limited to the following ports. Emerson MB (Pembina, North Dakota 701-825-5800); North Portal Saskatchewan (Portal Station, North Dakota 701-926-7500); Coutts AB (Sweetgrass, Montana 406-335-9610); Kingsgate; BC (Eastport, Idaho 208-267-3966); Osoyoos, BC (Oroville, Washington 509-476-2955); and, PAC Highway (Blaine, Washington 360-332-5771) For in-transit delays, such as a breakdown during transit, the carriers shall contact the nearest CBP port of entry Expected duration of the following work around measures will be for the duration of the infrastructure delays or up to thirty days and re-evaluated once commercial traffic normalizes or operationally resumes. All protocols and policies apply to any port of entry outside of the affected area, i.e., Seattle Field Office. Carriers and importers failure to follow stipulated workaround procedures will be penalized for any violations.  Note that CBP will exercise maximum flexibility to ensure that legitimate transactions are facilitated but need cooperation from the industry sector to ensure facilitation.   Travel Documents Requirements: Western Hemisphere Travel Initiative (WHTI) compliant document is required for all drivers and passengers/co-drivers. Drivers and all vehicle occupants must be in possession of all documents, including approved Form I-194 waivers of inadmissibility, when applying for admission. Those drivers and vehicle occupants who have a criminal history and do not have an approved waiver of inadmissibility will not be permitted to enter the United States. https://www.cbp.gov/travel/us-citizens/western-hemisphere-travel-initiative https://www.cbp.gov/travel/us-citizens/western-hemisphere-travel-initiative/faqs   Entry filing/requirements: Bond requirements for carriers within the containment area will be waived for trucking companies that do not normally cross the US border. User fee requirements will be adhered to, and fees will be collected. https://help.cbp.gov/s/article/Article-18 CBP Officers will input the manifest information in ACE manually based on the submission of documents provided.   Container security/verification: Containers must be properly sealed either prior to arrival or at the border.  CBP personnel shall record and/or verify seal numbers at both entry and exit ports of entry.  Carriers will not unload or load any additional cargo or break the seal on the container/trailer while in the US. Upon arrival to the US border CBP primary booth, identification and any documents including bills of lading, packing lists, invoices, foreign government certificates, etc. as well as trailer license number will be provided to the CBP Officer and/or agriculture specialist. Upon reentering Canada, carriers transiting under this procedure will present themselves to CBSA personnel for verification of seals and collection of seal numbers as well as Canadian reentry requirements.   Prohibited/restricted items: Prohibited items currently legal in Canada, but not in the U.S. will not be authorized for movement under these procedures. Restricted merchandise, such as medical equipment, pharmaceuticals, agriculture commodities, and live animals, may require further review by CBP personnel at the port of entry.  This may include additional documentation as mandated by the appropriate regulatory agency (USDA, FDA etc).  Additional information will be provided as it becomes available.     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 50138288?

CSMS 50138288 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "CBP Guidance to Alleviate Supply Chain Disruptions in British Columbia, Canada, November 18, 2021". 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 50138288 published?

CBP published CSMS 50138288 on November 19, 2021. 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.

Learn more

Tandom guides relevant to CBP CSMS messages

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource →

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.

Open resource →

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.

Open resource →

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource →

Bulk-classify SKU descriptions with the Tandom HTS Classifier API

Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.

Open resource →

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource →