The Trade Stack Issue #22 — Section 232 derivative enforcement focus, AD/CVD final on Korea aluminum extrusions, Section 122 expiry timelines

This Week in Tariffs

1) Section 232 — derivative articles enforcement focus widens

Commerce signaled enforcement focus on the now-pubished derivative article lists across steel, aluminum, copper, auto-parts, and timber products. Custody-pending entries — particular finished/multi-component articles that historically stayed at the edge of the derivative rule — are increasingly the target of CBP CF-29 technical-information requests.

Who's affected: Importers of finished/multi-component articles in any of the active Section 232 derivative baskets. Source: Commerce / CBP enforcement focus, June 22, 2026.

2) AD/CVD — final determination on Korea aluminum extrusions

Commerce issued the final AD/CVD rates on Korea-origin aluminum extrusions (HTS 7604) this week. Rates were tightened from pre-initiation summary indications. Importers shipping aluminum extrusions from Korea should re-baseline working-capital exposure.

Who's affected: Aluminum extrusion importers — Korea-origin HTS 7604. Source: Commerce AD/CVD Access portal, June 2026.

3) Section 122 — expiry timeline approaches

Section 122 of the Trade Act of 1974 — the statutory basis that permits the executive branch to impose temporary tariff modifications to address fundamental balance-of-payments deficits — approaches a key parliamentary review milestone this quarter. Section 122 has been referenced in trade policy discourse as a fallback mechanism should USTR's Section 301 / Section 232 toolkit become constrained.

Who's affected: All importers tracking tariff regime transitions. Source: 19 USC 2132, Congressional review cadence, 2026.

Duty Savings Spotlight

Aluminum extrusions vs. aluminum moldings — chapter 76 misclassification risk

Aluminum extrusions (HTS 7604.29.50) versus aluminum moldings (HTS 7610.90.00) lead to materially different duty outcomes when Section 232 stacking applies:

• HTS 7604.29.50 (worked aluminum extrusions) — 5.7% MFN + 10% Section 232 stacking when applicable
• HTS 7610.90.00 (aluminum structures, moldings) — 5.7% MFN + 10% Section 232 stacking when applicable

How to check: Describe the aluminum's manufacturing process (extruded vs. molded), end-use, and any further processing required. Confirm Section 232 stacking and Section 301 list placement before entry. The USITC HTS database is the authoritative source.

Run the HTS Classifier →

Compliance Alert

CBP e-commerce de minimis review

CBP signaled regulatory intention to overhaul the Section 321 de minimis process for e-commerce shipments. The current $800 de minimis threshold has been under interagency review, particularly on parcels with items from UFLPA-exposed entity list countries. Importers relying on Section 321 to ship consumer goods should pre-stage transition plans.

Impact: Direct-to-consumer importers and online retailers relying on Section 321 de minimis. Source: CBP CSMS and interagency review of 19 USC 1321, 2026.

Quick check: USTradeStack's Landed Cost Calculator lets you model the per-parcel landed cost under both Section 321 and formal entry workflows so you can compare the true economics.

Run the Landed Cost Calculator →

One Tool, One Win — Landed Cost Calculator

Aluminum and metal-intensive imports are running hot. Before you quote a supplier price to your team, run it through this — catches Section 232 derivative scoping and AD/CVD orders that flat percentages miss.

1. FOB purchase price + freight + insurance
2. Duty rate by HTS chapter (USITC) + Section 232 derivative stacking
3. MPF + HMF + any active AD/CVD order
4. Total landed cost per unit

Run the Landed Cost Calculator →