China and the United States are now widely described as being locked in a “chip war”, a phrase that captures both the technological stakes and the geopolitical intensity surrounding advanced semiconductors and artificial intelligence. Yet behind the dramatic terminology lies a dense web of export control law, industrial policy, national security doctrine, intellectual property regulation, and multilateral trade commitments that together define the true contours of this contest. To understand what the so-called chip war is really about requires moving beyond rhetoric and examining the legal architecture that has transformed microelectronics from commercial inputs into instruments of state power.
The modern semiconductor industry emerged from wartime research in the mid twentieth century and matured through decades of globalised supply chains. By the late twentieth century, fabrication, design, and equipment production had become deeply transnational. The United States retained dominance in advanced chip design and electronic design automation software, while manufacturing leadership shifted towards East Asia, most notably Taiwan and South Korea. China, for its part, became the world’s largest semiconductor consumer but remained dependent on foreign suppliers for high-end logic chips and advanced manufacturing equipment. This structural interdependence persisted until strategic rivalry redefined semiconductors as critical national security assets.
The legal turning point occurred when the United States began systematically expanding export controls on advanced semiconductor technologies to China. The Export Control Reform Act of 2018 provided statutory authority to regulate emerging and foundational technologies. Using this framework, the Bureau of Industry and Security within the Department of Commerce introduced sweeping restrictions in October 2022 and subsequently expanded them in 2023 and 2024. These measures limit the export to China of advanced logic chips, certain graphics processing units used for artificial intelligence training, semiconductor manufacturing equipment capable of producing cutting-edge nodes, and the provision of United States persons’ services to Chinese fabrication facilities. The regulations operate extraterritorially by applying the foreign direct product rule, which extends United States jurisdiction to foreign-produced items derived from United States technology.
China has responded through its own legal instruments, including the Export Control Law of 2020, the Anti-Foreign Sanctions Law of 2021, and the Unreliable Entity List regime. These laws empower Beijing to restrict exports of critical materials such as gallium and germanium, both essential to semiconductor manufacturing, and to impose countermeasures against foreign companies deemed to endanger national interests. In parallel, China has intensified industrial policy support for domestic semiconductor champions through state-backed investment funds and procurement preferences.
The legal confrontation also intersects with multilateral trade law. The United States justifies its controls on national security grounds, invoking the security exception contained in Article XXI of the General Agreement on Tariffs and Trade 1994. While historically treated as largely self judging, recent World Trade Organization jurisprudence has clarified that invocation of national security is subject to limited review. However, with the Appellate Body non functional, enforcement remains politically constrained. The chip war therefore exemplifies a broader shift from rule based adjudication to power based regulatory action.
Yet framing the dispute purely as China versus United States rivalry obscures the complexity of the ecosystem. Advanced semiconductor manufacturing depends on Dutch lithography equipment, Japanese materials, South Korean memory producers and Taiwanese foundries. United States policy has sought alignment with allies through arrangements such as the trilateral coordination with Japan and the Netherlands to restrict advanced lithography exports. This demonstrates that the contest is not bilateral in isolation but embedded within a coalition based technology governance model.
The question of what it means to win an artificial intelligence competition further complicates the narrative. Artificial intelligence capability depends not only on access to advanced chips but also on data availability, algorithmic innovation, energy supply, talent mobility and regulatory frameworks. Winning cannot be reduced to producing the smallest transistor node. It involves establishing standards, shaping global regulatory norms, securing supply chain resilience and maintaining research leadership. Moreover, artificial intelligence development is increasingly constrained by domestic regulation. The European Union Artificial Intelligence Act, United States executive orders on AI safety and China’s own algorithm and generative AI regulations reflect an emerging layer of governance that conditions how chips are deployed.
In practical terms, the chip war is about technological sovereignty and the distribution of leverage within global supply chains. It is about whether export control law can be used as a strategic instrument without fragmenting the global economy beyond repair. It is about whether national security exceptions will erode multilateral trade disciplines. It is about the tension between innovation openness and strategic containment.
The rivalry narrative, while politically potent, risks oversimplification. Both economies remain deeply interdependent, and global semiconductor progress still relies on collaborative research and multinational capital flows. The decisive outcome will not be a single technological breakthrough but the capacity to sustain innovation ecosystems under regulatory constraint. In that sense, the chip war is less a conventional contest with a clear victor and more a prolonged structural recalibration of global technology governance, in which law, economics and power are inseparably intertwined.