“When the tariff hits China, the factory moves to Vietnam — and sometimes just the label does.” Tariff circumvention is the practice of rerouting goods, relocating minimal processing operations, or falsifying country-of-origin documentation to avoid import duties — making a product appear to originate from a non-tariffed country when the substantial manufacturing value was created in the targeted jurisdiction.
Executive Summary
Tariff circumvention is as old as tariffs themselves — but its scale and sophistication have grown dramatically in response to the U.S.-China trade war, which began with Section 301 tariffs in 2018 and escalated to 145% on Chinese goods by 2025. The fundamental economic logic is straightforward: a large enough tariff differential creates sufficient profit margin to cover the cost of establishing third-country transshipment operations, minimal processing facilities, or fraudulent certificate-of-origin schemes. Vietnam, Mexico, Malaysia, Thailand, and the UAE have all been identified as major circumvention conduits for Chinese goods entering the U.S. market. The U.S. response — anti-circumvention investigations, country-of-origin enforcement, and eventually tariffs on the conduit countries themselves — has driven a game of trade-route Whac-A-Mole with no clear winner.
The Strategic Mechanism
- Transshipment: Goods manufactured in China are shipped to a third country, re-labeled, and re-exported to the U.S. as originating from the third country — typically involving minimal or no value-added processing. This is straightforward fraud under customs law but difficult to detect at scale.
- “Minimal operations” washing: A slightly more sophisticated approach establishes assembly operations in a third country that add some value but do not meet the “substantial transformation” standard required for legitimate country-of-origin change. Chinese steel components assembled into finished products in Vietnam, for example, may not meet the threshold.
- Rules of origin arbitrage: Complex global supply chains create genuine ambiguity about country of origin. Sophisticated manufacturers exploit this ambiguity deliberately, designing supply chains to technically comply with rules of origin standards while achieving circumvention outcomes.
- Anti-circumvention investigations: U.S. Customs and Border Protection (CBP) and the Commerce Department conduct formal anti-circumvention inquiries — with the burden of proof on the importer to demonstrate that their goods genuinely do not originate in the tariffed country.
- Tariff cascading: The Trump administration’s April 2025 “Liberation Day” tariffs on virtually all U.S. trading partners simultaneously — including Vietnam, Mexico, and other major conduit countries — were partly designed to close the circumvention gap by eliminating the tariff differential that made circumvention economically attractive.
Market & Policy Impact
- CBP’s Enforce and Protect Act (EAPA) investigations of circumvention reached record levels in 2024–2025, with solar panels, steel, aluminum, furniture, and apparel among the most frequently investigated product categories.
- Vietnam became the most significant circumvention conduit of the 2018–2025 period: Vietnamese exports to the U.S. surged from approximately $50 billion in 2017 to over $120 billion by 2024, with a substantial share attributable to Chinese goods transshipped through or minimally processed in Vietnam.
- The U.S.-Mexico-Canada Agreement (USMCA) rules of origin for automobiles — requiring 75% North American content and specific steel/aluminum origin requirements — were designed specifically to prevent Chinese automotive supply chain circumvention through Mexican assembly.
- Chinese solar panel manufacturers established Malaysian and Thai manufacturing operations partly to avoid U.S. anti-dumping and countervailing duty orders — operations that became subject to their own anti-circumvention investigations beginning in 2022.
- The “Liberation Day” tariff structure applied broadly enough to significantly reduce tariff differential circumvention opportunities — but at the cost of raising consumer prices and disrupting non-circumventing trade from genuinely diverse manufacturing economies.
Modern Case Study: Solar Panel Circumvention and the Clean Energy Paradox (2022–2025)
U.S. solar panel tariffs — originally targeting Chinese manufacturers under Section 201 and anti-dumping orders — created one of the most thoroughly documented circumvention patterns in trade law history. Chinese solar companies established manufacturing operations in Malaysia, Thailand, Vietnam, and Cambodia, exporting panels to the U.S. as Southeast Asian-origin products. When the Commerce Department launched anti-circumvention investigations in 2022, President Biden simultaneously invoked emergency tariff exemptions to allow circumvented panels to enter duty-free for two years — acknowledging that the clean energy transition depended on affordable solar panels that the U.S. domestic industry could not supply. The episode crystallized the central tension of tariff circumvention enforcement in the green energy era: the same Chinese supply chain dominance that tariffs are designed to challenge is also the supply chain that makes the energy transition affordable. By 2025, the exemption had expired, new tariff rates were in force, and U.S. solar deployment projections had been revised downward — illustrating that tariff enforcement and clean energy build-out are, in the current supply chain reality, in direct tension.