In a Cargo Systems Messaging Service (CSMS) bulletin published on September 2, 2026, U.S. Customs and Border Protection (CBP) provided guidance on the implementation of Section 232 duties on unmanned aircraft systems (UAS) and UAS components.

The guidance was issued following the Presidential Proclamation, “Adjusting Imports of Unmanned Aircraft Systems and Unmanned Aircraft Systems Components into the United States”, issued on August 13, 2026.

The CSMS includes entry filing instructions on UAS and UAS components and provides the applicable Chapter 99 tariff provisions for each scenario that was detailed in the original proclamation.

CBP also confirmed that manufacturing drawback claims shall be available on these Section 232 duties imposed under this action.

In addition, products entered into a Foreign Trade Zone (FTZ) that are subject to the duties imposed by the proclamation may only be entered under “privileged foreign status,” unless eligible for admission under “domestic status”, and will be subject to these Section 232 duties when entered for consumption.

The section 232 duties on unmanned aircraft will go into effect on UAS entered for consumption, or withdrawn from warehouse for consumption, on or after 12:01 a.m. Eastern Time on September 3, 2026. Duties on UAS components will go into effect on or after 12:01 a.m. Eastern Time on February 9, 2027.

CSMS #69738151 can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-4281ea7?wgt_ref=USDHSCBP_WIDGET_2

The ““Adjusting Imports of Unmanned Aircraft Systems and Unmanned Aircraft Systems Components into the United States” Presidential Proclamation can be found here:
https://content.govdelivery.com/bulletins/gd/USDHSCBP-4281ea7?wgt_ref=USDHSCBP_WIDGET_2