Section 232 Investigations Tracker: Open National Security Tariff Reviews
Track open Section 232 national-security investigations that could produce future tariffs, including pharmaceuticals, semiconductors, lumber, trucks, aircraft, critical minerals, polysilicon, drones, wind turbines, robotics, and medical products.
Quick Answer
Section 232 is not only a list of current Chapter 99 codes. It also includes open Commerce investigations that can become future national-security tariffs. As of this review, open or recent investigation tracks include pharmaceuticals, semiconductors, timber/lumber, medium- and heavy-duty vehicles, processed critical minerals, commercial aircraft and jet engines, polysilicon, unmanned aircraft systems, wind turbines, robotics and industrial machinery, and medical products. Treat this as a watchlist until a proclamation, Federal Register notice, USITC HTS update, and CBP guidance create entry filing rules.
Informational only - not legal advice.
Why this tracker exists
The public Section 232 HTS code page shows current Chapter 99 families. This page tracks upstream investigations that could become future codes or rate changes.
An investigation alone does not impose a duty. The sequence generally is:
- Commerce initiates or conducts a Section 232 investigation.
- Commerce reports findings to the President.
- The President acts by proclamation or other direction.
- The Federal Register, USITC HTS revisions, and CBP guidance convert the action into entry filing rules.
Open or recent investigation lanes
| Investigation lane | Initiation noted by BIS | Content impact |
|---|---|---|
| Robotics and industrial machinery | Sept. 2, 2025 | Watch for machinery derivative lists |
| PPE, medical consumables, medical equipment, and devices | Sept. 2, 2025 | Watch medical supply-chain pages |
| Wind turbines and parts | Aug. 13, 2025 | Watch energy equipment imports |
| Unmanned aircraft systems and parts | July 1, 2025 | Watch drone/UAS importers |
| Polysilicon and derivatives | July 1, 2025 | Watch solar/semiconductor inputs |
| Commercial aircraft and jet engines | May 1, 2025 | Watch civil-aircraft carveouts and derivative duty interactions |
| Processed critical minerals and derivatives | Apr. 22, 2025 | Watch batteries, minerals, and electronics |
| Medium- and heavy-duty vehicles and parts | Apr. 22, 2025 | Already has current 9903.74.* implementation |
| Pharmaceuticals and ingredients | Apr. 1, 2025 | Already has 9903.04.* headings with future effective dates |
| Semiconductors | Apr. 1, 2025 | Current 9903.79.* family exists |
| Timber and lumber | Mar. 10, 2025 | Current 9903.76.* family exists |
What to do with this information
Use this page for planning, not entry filing. For live entries, rely on the exact HTS Chapter 99 line, CBP guidance, and the current Section 232 HTS code page.
Related
Sources & Verification
Last verified: 2026-06-08
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Get StartedInformational only — not legal advice. RefundArrow is not a law firm, and this resource does not create an attorney‑client relationship with Himmelstein & Adkins, LLC. Tariff/refund outcomes depend on your facts, entry records, and evolving CBP/court guidance; consult qualified customs counsel for advice on your situation.