The Tariff Wall That Became a Map

When BYD and its Vietnamese partner Kim Long Motor announced a $130 million battery plant in Hue this January, the project description did not bother with euphemism. The factory, it stated, would utilize free trade agreements with ASEAN and the European Union to export batteries with low or zero tariffs ^[1]. The circumvention was not hidden in a subsidiary's filing or teased out by analysts. It was the pitch. The Commerce Department, for its part, has been saying the same thing from the other side. In its solar anti-subsidy probe this February, the department alleged that Chinese companies shifted production to Indonesia and Laos specifically to bypass existing tariffs ^[2]. Both sides agree on the mechanism. The only dispute is whether it is legal. The mechanism is not subtle. In October, the Trump administration raised tariffs on China to 125 percent while pausing reciprocal tariffs for most other nations for 90 days ^[3]. The differential between what a Chinese firm pays exporting from China and what it pays exporting from, say, Vietnam is the entire incentive. And Chinese battery and electric-vehicle firms have responded at scale: BYD, CATL, Gotion, and Envision are collectively investing $45 billion in at least 68 overseas factories, with plants in Thailand, Indonesia, and Vietnam ^[4]. Roughly 80 percent of Chinese battery firms' overseas capacity is now headed to Southeast Asia, where domestic overcapacity has dropped Chinese plant utilization to roughly one-third ^[5]. The results are visible in the manufacturing data. ASEAN's purchasing managers' index hit 52.8 in July, led by Thailand and Vietnam, while China's fell to 49.2 ^[6]. Thailand's automotive production rose 5.32 percent in the first quarter, driven by battery electric vehicles — sales up 48 percent — and hybrids, up 24 percent ^[7]. In October, Vietnam and Thailand's manufacturing growth was explicitly attributed to a "tariff advantage over China" ^[8]. The competitive edge is not indigenous capability. It is being outside the wall. The pattern is not confined to ASEAN. Chinese automakers — Geely, SAIC, BYD, Chery, Xpeng — are establishing factories in Spain and Austria to bypass European Union EV tariffs ^[9]. Chinese EVs are entering the United States through Ciudad Juárez, Mexico, where buyers drive them across the border despite 250 percent US tariffs on Chinese vehicles; Congress is now proposing to ban Mexican and Canadian drivers from bringing Chinese-made cars in ^[10]. Latin American nations, flooded with low-priced Chinese EVs and e-commerce goods, have begun raising their own barriers — Mexico imposed 50 percent tariffs, Brazil hiked EV duties, Chile added a 19 percent VAT ^[11]. The same mechanism applies wherever a tariff differential exists: the overcapacity follows the gap. Washington's response has been to extend the wall to each new entry point. In April, the US imposed 126 percent solar duties on India, Indonesia, and Laos, with combined duties on Indian solar imports exceeding 200 percent ^[12]. In May, the US Trade Representative designated Vietnam a "Priority Foreign Country" for the first time in 13 years and launched three concurrent probes — on intellectual property, forced labor, and "excess manufacturing capacity."

continues to impair the competitive position of U.S. innovators and creators. — Jamieson Greer

A 40 percent tariff on transshipments, imposed in July, was designed specifically to prevent Chinese goods from being routed through Southeast Asia ^[13]. And a record $112 billion gap between Chinese export reports and US Customs import data, revealed in February, showed that up to 25 percent of Chinese shipments to the US were bypassing tariffs through DDP schemes, underreporting, and disposable shell companies ^[14]. CBP confirmed it is targeting Importer of Record accounts linked to China and Hong Kong. The pattern is not that every factory in ASEAN is Chinese. It is not. Vietnam attracted $24.81 billion in foreign direct investment in the first five months of 2026, but the top investors were Singapore at $6.8 billion and South Korea at $4.22 billion; China was third at $1.79 billion ^[15]. Apple moved M5 Vision Pro assembly to Vietnam, with packaging now reading "Product of Vietnam" ^[16]. Foxconn has invested $3.2 billion in Vietnam's Bac Ninh province ^[17]. The "China+1" diversification is real and broader than any single actor. Vietnam itself is hedging — complying with US demands on intellectual property and labor while simultaneously expanding trade ties with India toward a $30 billion target by 2030 and concluding a free trade agreement with the European Free Trade Association ^[18]. But the Chinese firms are the ones openly citing tariff avoidance as their rationale, and US enforcement is specifically targeting the Chinese transshipment channel. The distinction matters because it explains the dual track Washington is now running. At the October 2025 ASEAN summit, President Trump signed trade and critical mineral deals with Malaysia, Thailand, Cambodia, and Vietnam, maintaining roughly 19 percent reciprocal tariffs ^[19]. The administration is simultaneously courting ASEAN with preferential deals and punishing the transshipment route with anti-dumping duties — trying to keep the region from becoming a pure Chinese conduit while acknowledging that it already partly is. The structural irony is plain. The tariff wall was built to contain Chinese industrial overcapacity. It functions instead as a signal — it tells that overcapacity exactly where the differential is, the overcapacity follows it, and every country that receives it becomes the next entry on the enforcement list. The wall does not hold the flood back. It charts its course.