Expeditors Newsflash

CBP Updates Guidance on Reporting Unknown Countries of Aluminum Smelt and Cast

Posted by Timothy Miller on 6/20/25 5:00 PM

In a Cargo Systems Messaging Service (CSMS) bulletin published on June 13, 2025, U.S. Customs and Border Protection (CBP) updated guidance on how to report an unknown country of smelt and cast for aluminum products subject to Section 232.

If an importer of derivative aluminum products does not know the country of smelt and/or cast, then the importer should report “UN” for “unknown” for the International Organization for Standardization (ISO) code. When a country of cast or smelt is unknown, the importer will be assessed the 200 percent Section 232 duties on imports of aluminum from Russia.

The guidance goes into the specific details on how this information needs to be presented in the Automated Commercial Environment (ACE) and introduces two new messages added to the Entry Summary Error Dictionary to ensure compliance.

The updated requirements will be deployed in ACE on June 28, 2025.

CSMS # 65340246 can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-3e50356?wgt_ref=USDHSCBP_WIDGET_2

Topics: CBP, Steel, Aluminum

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