Why Section 301 tariffs won’t go away so fast

Key insights:

• • • Sect. 301 and IEEPA tariffs operate on fundamentally different legal foundations — The IEEPA tariffs flow from an executive emergency declaration that can be unwound overnight, while Sect. 301 findings are built on a formal evidentiary record that can survive numerous administrations.

    • Those manufacturers that diversified away from China now face compounded exposure — The countries to which many manufactured moved their trade operations — including Vietnam, India, Bangladesh, and Malaysia — are now named in the recent Sect. 301 action.

    • Managing this complexity without purpose-built tools is no longer realistic — The need for access to quality vendor data, tariff classifications, country-of-origin mapping, and duty layering requires systems that can be updated continuously, not spreadsheets that are reviewed quarterly.

---

Since early 2025, manufacturers have lived in a tariff environment defined by volatility that’s been dictated seemingly at the whim of the United States. Rates announced one week were paused the next, country-specific deals emerged from diplomatic calls, and 90-day exemptions became the operating rhythm. For supply chain teams, the rational response was to treat every new tariff as provisional — something to monitor, not necessarily something to plan around.

That logic does not apply to the issued findings on June 2 of the U.S. Trade Representative (USTR), under Section 301 of the Trade Act of 1974 that a list of 60 economies — comprising the largest US trading partners — had failed to enforce a ban on goods produced with forced labor are therefore were restrictive to US trade.

To understand why, it helps to understand what Sect. 301 actually requires and how it compares to the International Emergency Economic Powers Act (IEEPA), which the Trump Administration had used as its authority behind the 2025 reciprocal tariffs until that was disallowed by the U.S. Supreme Court in February.

Unlike the IEEPA, Sect. 301 is not an executive power that turns on or off depending on when a national emergency is declared. Rather, it is a statutory framework that requires the USTR to conduct a formal investigation, gather evidence, hold public hearings, and build a record before making an actionability determination. In the June 2 action alone, the USTR received testimony from nearly 60 witnesses and almost 500 public comments before issuing its findings.

That record matters, because it is what makes tariffs issued in response to Sect. 301 findings structurally resistant to reversal. Unwinding them requires either a new formal determination, a negotiated bilateral resolution in which the trading partner actually changes its practices, or Congressional action. A new administration cannot simply issue a presidential order lifting them because the legal bar is categorically higher.

And this distinction is no longer theoretical. After the Supreme Court ruled his tariffs invalid, President Trump immediately pivoting to Section 122 of the Trade Act of 1974, which permits a temporary global surcharge of up to 15% for no more than 150 days. That Section 122 tariff took effect February 24, and is set to expire July 24, unless extended by Congress. Tariffs imposed because of the June 2 Sect. 301 findings were never exposed to the same legal vulnerability and is now the administration’s primary vehicle for building durable tariff authority.

There is also a political dimension that compounds the durability. The June 2 findings are grounded specifically the failure of the named economies to prohibit the importation of goods made with forced labor. That framing carries broad bipartisan support in Washington, and neither party is positioned to argue against forced labor prohibitions, which means the political incentive to reverse these tariffs is far weaker than it was for the IEEPA-based tariffs.

The compounded exposure problem

For manufacturers that spent 2024 and 2025 diversifying their supply chains away from the tariff-heavy China, the June 2 findings create a specific and uncomfortable problem. The most common destinations for that diversification — Vietnam, Bangladesh, India, Malaysia, Thailand, and Indonesia — are all named in USTR’s recent action. Proposed additional duties of 10% to 12.5% would layer on top of existing duties and any Sect. 122 tariffs still in place during the transition period.

In other words, the move that looked like risk mitigation then may now carry its own tariff exposure now — and unlike the situation in 2025, there is no obvious alternative jurisdiction.

That means vendor management systems that integrate tariff data in real time — pulling current duty rates by code, flagging country-of-origin changes, modeling landed cost across multiple sourcing scenarios — are no longer a competitive advantage. Now they are a baseline operational requirement. The same applies to supplier compliance documentation. As forced labor attestations become relevant to exclusion eligibility under Sect. 301, having those records organized, current, and accessible is not an audit-readiness question, rather, it’s a cost-of-goods question.

Then, the practical challenge for manufacturers becomes an operational one, not just a strategic one. Tracking tariff exposure across dozens of suppliers, multiple countries of origin, layered duty structures, and evolving classification rules is not a task that can be easily scaled with traditional tools. For example, in the 24 hours following the Supreme Court’s tariff ruling, the US terminated one tariff regime, enacted a replacement under a different statute, and announced the launch of multiple new Sect. 301 investigations. A manufacturer’s spreadsheet that’s updated monthly cannot keep pace with a regulatory environment moving at that speed.

The durable lesson

The IEEPA tariff experience trained supply chain teams to stay nimble — and then demonstrated exactly how fragile executive-action tariffs can be when the Supreme Court invalidated them. That instinct toward flexibility still has value, of course; however, the Sect. 301 framework requires a parallel capability that requires manufacturers to recognize when a tariff is structural, model its long-term cost impact, and adapt sourcing and vendor strategies accordingly.

These new Sect. 301-based tariffs are not a negotiating position waiting to be resolved. They are a legal determination, built on a formal record, grounded in a cause — the elimination of forced labor from global supply chains — that has strong consensus across the political spectrum.

Those manufacturers that plan around them as permanent while investing in the tools to manage that complexity in real time will be better positioned than those waiting for the next exemption announcement.

---

You can find out more about how tariffs continue to impact global trade here