US Commerce Department establishes Aluminum Import Monitoring and Analysis (AIM) licensing system

Mechanism

AIM mirrors the earlier Steel Import Monitoring and Analysis (SIMA) system: rather than restricting volume directly, it forces disclosure at the point of entry. Every license application must name the smelter country (and second-largest smelter country, if blended) and the casting country for the aluminum in the shipment — designed to expose Chinese-origin metal routed through third countries for final casting, a transshipment pattern Commerce had flagged as eroding Section 232 tariff enforcement. The rule took effect in stages: Commerce originally set a March 2021 compliance date, then stayed and delayed it before full compliance began 28 June 2021.

Downstream implications

• Gives Commerce a real-time, entry-level dataset on aluminum smelter-of-origin, closing a

visibility gap that transshipment through third-country casters had exploited.

• Adds a mandatory administrative step (license application, smelter disclosure) to every

covered aluminum import, raising compliance cost independent of any tariff or quota.

• Functions as an enforcement layer under the broader Section 232 aluminum tariff regime rather

than a standalone restriction — its bite is in traceability, not in blocking volume.

Open questions

• Whether disclosed smelter-country data has been used to trigger new Section 232 enforcement

actions against transshipment specifically.

• Whether AIM licensing data has been made available in aggregate for market analysis, or

remains an internal enforcement tool.