Section 232 Investigations
The Effect of Imports on the National Security
A Section 232 investigation is conducted under the authority of the Trade Expansion Act of 1962, as amended. The purpose of the investigation is to determine the effect of imports on the national security. Investigations may be initiated based on an application from an interested party, a request from the head of any department or agency, or may be self-initiated by the Secretary of Commerce.
The Secretary’s report to the President, prepared within 270 days of initiation, focuses on whether the importation of the article in question is in such quantities or under such circumstances as to threaten to impair the national security. The President can concur or not with the Secretary’s recommendations, and take action to “adjust the imports of an article and its derivatives” or other non-trade related actions as deemed necessary.
National Security Investigation of Imports of Robotics and Industrial Machinery - Initiated September 2, 2025
National Security Investigation of Imports of Personal Protective Equipment, Medical Consumables, and Medical Equipment, Including Devices - Initiated on September 2, 2025
The Effect of Imports of Wind Turbines on the National Security – Initiated August 13, 2025
The Effect of Imports of Unmanned Aircraft Systems (UAS) and Their Parts and Components on the National Security – Initiated July 1, 2025
The Effect of Imports of Polysilicon and its Derivatives on the National Security – Initiated July 1, 2025
The Effect of Imports of Commercial Aircraft and Jet Engines on the National Security – Initiated May 1, 2025
The Effect of Imports of Processed Critical Minerals and Derivative Products on the National Security – Initiated April 22, 2025
The Effect of Imports of Medium-Duty Trucks, Heavy-Duty Trucks, and Medium- and Heavy-Duty Truck Parts on the National Security – Initiated April 22, 2025
The Effect of Imports of Pharmaceuticals and Pharmaceutical Ingredients on the National Security – Initiated April 1, 2025
The Effect of Imports of Semiconductors and Semiconductor Manufacturing Equipment on the National Security – Initiated April 1, 2025
The Effect of Imports of Timber and Lumber on the National Security – Initiated March 10, 2025
The Effect of Imports of Copper on the National Security – Initiated March 10, 2025
- Federal Register Notice
- Proclamation 10962 of July 30, 2025 - Adjusting Imports of Copper Into the United States
Titanium Sponge Working Group: Ensuring Access to Titanium Sponge in the United States
The Effect of Imports of Neodymium-Iron-Boron (NdFeB) Permanent Magnets on the National Security – September 2022 / FACT SHEET: Biden-Harris Administration Announces Further Actions to Secure Rare Earth Element Supply Chain
The Effect of Imports of Vanadium on the National Security – February 2021
The Effect of Imports of Titanium Sponge on the National Security – November 2019
The Effect of Imports of Uranium on the National Security – April 2019
The Effect of Imports of Automobiles and Automobile Parts on the National Security – February 2019/The Effect of Imports of Automobiles and Automobile Parts on the National Security Appendices B through H – February 2019 (ITA)
The Effect of Imports of Steel on the National Security – Jan. 2018
The Effect of Imports of Aluminum on the National Security – Jan. 2018
Iron Ore and Semi-Finished Steel – 2001
The Effect of Imports of Crude Oil on National Security – 1999
Crude Oil and Petroleum Products – 1994
Ceramic Semiconductor Packaging – 1993
Gears and Gearing Products – 1992
Crude Oil and Petroleum Products – 1989
Plastic Injection Molding – 1989
Crude Oil from Libya – 1982 (47 F.R. 10507)
Chromium, Manganese and Silicon Ferroalloys and Related Materials –1981 (49 F.R. 21391)
The Effect of Imports of Nuts, Bolts, and Large Screws on the National Security - 1983
Metal-Cutting and Metal-Forming Machine Tools – 1983 (48 F.R. 15174)
Glass-lined Chemical Processing Equipment – 1981 (47 F.R. 11746)