Section 301 Probes Launched Against 16 Countries — Vietnam, India, and More in the Crosshairs
If you moved your sourcing out of China to avoid Section 301 tariffs, this is the article you need to read.
USTR launched expedited Section 301 investigations into 16 countries in March 2026, targeting "industrial excess capacity" in manufacturing. New tariffs are expected by July 24, 2026 — just three months away.
Which Countries Are Being Investigated
China plus 15 additional countries. While the full list hasn't been officially published, trade attorneys and press reports indicate the probe covers the countries where Chinese manufacturing has relocated:
- Vietnam — the #1 alternative sourcing destination for US importers fleeing China tariffs
- India — rapidly growing as a manufacturing hub
- Indonesia — textiles, electronics, commodities
- Thailand — auto parts, electronics, food processing
- Malaysia — semiconductors, electronics
- Cambodia — apparel, footwear
- Bangladesh — textiles, garments
- Mexico — already under USMCA pressure, now facing additional scrutiny for Chinese-owned factories
The investigations are timed to produce results before the Section 122 emergency tariffs expire on July 24, 2026. This is not a coincidence — the administration needs new tariff authority to replace the ones the Supreme Court struck down.
Why This Matters
The "China+1" strategy may be dead. Over the past 3 years, thousands of small importers shifted sourcing from China to Vietnam, India, and Southeast Asia specifically to avoid Section 301 tariffs. Those tariffs may now follow them.
An importer who moved from Chinese factories (25-145% tariff) to Vietnamese factories (currently 10% baseline) could see Vietnam-specific tariffs of 25-50% added on top. The cost advantage of relocating supply chains evaporates overnight.
Timeline
| Date | What Happens |
|---|---|
| March 2026 | USTR launches Section 301 probes into 16 countries |
| April 15, 2026 | Public comment period closes |
| May-June 2026 | USTR reviews comments, prepares tariff recommendations |
| July 24, 2026 | Section 122 tariffs expire — new Section 301 tariffs expected same day |
What You Should Do Right Now
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Map your supply chain exposure. Which of your products come from the 16 investigated countries? Which HTS codes are involved?
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Scenario plan. If Vietnam or India gets hit with 25% additional tariffs, what does that do to your landed cost? Can your margins survive it?
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Don't panic-move again. Moving from China to Vietnam took years and cost money. Moving again in 3 months isn't feasible. Focus on margin management, not supply chain upheaval.
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Submit a public comment. The comment period closes April 15. If your business would be harmed by new tariffs on a specific country, USTR needs to hear from you. Comments can be submitted at regulations.gov.
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Monitor the Federal Register. The proposed tariff lists — with specific HTS codes and rates — will be published before they take effect. You need to know the moment they drop.
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Talk to your customs broker. They should be tracking this. If they're not, that's a problem.
The Bigger Picture
The average effective US tariff rate is now 11% — the highest since 1943 (Yale Budget Lab). With Section 301 tariffs potentially expanding to 16 more countries, that number could climb to 15-20%. The era of cheap global sourcing is being systematically dismantled.
Small importers who survive will be the ones who see changes coming before their next shipment, not after.
Source
CNBC: Section 301 Probes | Holland & Knight Analysis | Yale Budget Lab Tariff Rate Tracker
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