Is Mexico Becoming a Proxy in the U.S.-China Trade War?

Recent trade tensions between China and Mexico reveal a deeper geopolitical dynamic unfolding within North America’s economic architecture. While Mexico officially frames its new tariffs and customs verification mechanisms as defensive economic policy, the broader strategic context suggests the emergence of a proxy dimension in the intensifying economic rivalry between the United States and China. The introduction of a “second layer of control” over Chinese goods entering Mexico may represent what Brzezinski (1997) once described as a strategic move on the geopolitical chessboard, where intermediate actors become terrain through which great powers compete.

The immediate trigger for the dispute has been Mexico’s decision to impose tariffs ranging from 5 to 50 percent on more than 1,400 products originating from countries without free trade agreements with Mexico, a measure that disproportionately affects Chinese exports (Mexico News Daily 2026). According to China’s Ministry of Commerce (2026), Mexico’s tariff increases and related trade restrictions affect products representing approximately 30.25 billion US dollars in Chinese exports to Mexico. In 2025 Mexico imported about 135.9 billion dollars globally in the affected product categories, of which 35.4 billion originated from China, accounting for roughly 26 percent of total imports. The measures disproportionately impact mechanical and electrical goods, metallurgical and chemical products, textiles and light manufactures, with machinery and automotive components alone representing more than 17 billion dollars in Chinese exports to the Mexican market. Beijing has warned that such policies constitute trade barriers and may justify retaliatory action. The dispute has therefore evolved beyond a simple tariff disagreement into a broader contest over supply chains and market access.

However, the most consequential element of the new Mexican policy is the institutional architecture accompanying tariffs. Mexico has begun implementing stricter customs verification procedures designed to ensure that products benefiting from the United States-Mexico-Canada Agreement (USMCA) genuinely meet the treaty’s rules of origin. These mechanisms include enhanced documentation requirements, supply chain audits and physical verification of manufacturing processes. Such measures aim to prevent Chinese goods or components from entering the United States indirectly through Mexican production networks. In practical terms this means that automobiles, steel products, textiles and electronic components manufactured in Mexico but incorporating Chinese inputs may now face greater scrutiny at the border.

The geopolitical logic behind these measures becomes clearer when considering Washington’s growing concern that Chinese companies could use Mexico as an industrial gateway to the North American market. American policymakers have repeatedly argued that the USMCA must be strengthened to prevent Chinese firms from establishing factories in Mexico to circumvent U.S. trade restrictions (Reuters 2026).

From China’s perspective, Mexico’s policy shift appears closely aligned with U.S. strategic objectives. Chinese analysts and officials have suggested that Mexico’s tariff increases, and enforcement measures may be intended to signal political alignment with Washington ahead of the scheduled review of the USMCA in 2026 (Global Times 2025). The Chinese government has openly criticized the measures as unilateral protectionism and warned that they threaten bilateral economic relations (Ministry of Commerce 2026). This interpretation reinforces the perception that the dispute is embedded in the wider strategic rivalry between the world’s two largest economies.

Yet the emergence of this proxy dynamic also reflects Mexico’s own historical trajectory within the global economy. For decades Mexico embraced what Karl Polanyi (1944) famously described as the “self-regulating market” ideology, a belief that economic liberalization and trade integration would automatically generate industrial development. Since the implementation of the North American Free Trade Agreement in 1994, Mexico has become one of the world’s largest manufacturing exporters, with total exports exceeding 600 billion dollars annually. Nevertheless, the country’s investment in research and development remains below 0.5 percent of GDP, far lower than both China and the United States. The result has been an export model heavily dependent on foreign investment and external technological capabilities.

The current tightening of customs enforcement may therefore represent a belated recognition that trade liberalization alone did not generate the industrial capabilities required for sustained technological competition. Instead, Mexico now finds itself navigating between two competing economic giants. On one side stands the United States, which absorbs roughly eighty percent of Mexican exports and whose political pressure has intensified in recent years as Washington seeks to reduce economic dependence on China. On the other stands China, Mexico’s second largest trading partner and a crucial supplier of industrial inputs.

The political context surrounding Mexico’s customs administration further illustrates the pressures shaping this transformation. The recent resignation of the head of Mexico’s National Customs Agency occurred at a moment when the institution faces growing scrutiny related to smuggling, fiscal losses and the need to enforce stricter trade controls. While the official explanation emphasizes domestic political ambitions, the timing of the departure highlights the institutional strain associated with the increasing strategic importance of customs governance within North American trade policy (El Financiero 2026).

In this evolving environment, Mexico’s second layer of trade control may represent a broader geopolitical realignment in which regulatory tools become instruments of strategic competition. If the current trajectory continues, Mexico could increasingly function as a regulatory frontier in the economic confrontation between Washington and Beijing. Whether this development ultimately strengthens Mexico’s economic autonomy or further entrenches its dependence on the United States remains an open question. What is clear is that the intersection of tariffs, customs enforcement and supply chain governance has transformed North America into one of the principal arenas of the twenty-first century trade conflict.

The author is Full Professor and Researcher in the Academic Area of International Politics at the Universidad Autónoma Metropolitana, Xochimilco Unit, and serves as Executive Director of Estratequio, a Mexico-based research center dedicated to geopolitical analysis.

References

Brzezinski, Zbigniew. 1997. The Grand Chessboard: American Primacy and Its Geostrategic Imperatives. New York: Basic Books.

El Financiero. 2026. “Rafael Marín deja Aduanas; sería nuevo delegado de la Segob en Yucatán”. March 31. https://www.elfinanciero.com.mx/nacional/2026/03/31/rafael-marin-deja-aduanas-seria-nuevo-delegado-de-la-segob-en-yucatan/.

Global Times. 2025. "China initiates probe into Mexico’s proposed tariff hikes". September 25. https://www.globaltimes.cn/page/202509/1344524.shtml. 

Mexico News Daily. 2026. “China threatens retaliation over Mexico’s tariff hikes”. March 26. https://mexiconewsdaily.com/news/china-mexico-tariff-retaliation-threats/.

Ministry of Commerce of the People’s Republic of China (2026). Announcement No. 16 of 2026 about the final conclusions of its investigation into trade and investment barriers related to Mexico's restrictive measures against China 商务部公告2026年第16号 公布对墨西哥相关涉华限制措施进行贸易投资壁垒调查的最终结论. March 25. https://www.mofcom.gov.cn/zwgk/zcfb/art/2026/art_421afd3e7c904d2b91175b92a6784724.html.

Polanyi, Karl. 1944. The Great Transformation: The Political and Economic Origins of Our Time. Boston: Beacon Press.

Text citation (Chicago 17va ed.): Tzili-Apango, Eduardo. “Is Mexico Becoming a Proxy in the U.S.-China Trade War?”. Tequio geopolítico, April 1, 2026. https://estratequio.mx/is-mexico-becoming-a-proxy-in-the-us-china-trade-war.