What if the most powerful tool for shaping the future of artificial intelligence has already slipped into the hands of its most formidable competitor? According to recent reports, U.S. Commerce Secretary Howard Lutnick has raised concerns that one of ASML’s most advanced extreme ultraviolet (EUV) lithography machines may now be in China — a claim that challenges the very foundation of global semiconductor control.

ASML, the Dutch manufacturer of EUV machines, has consistently denied the allegations. The company asserts that no such machine exists in China and that its internal tracking systems confirm all EUV tools are either in use by approved customers or have been returned to the company. This dispute is not just a matter of corporate reputation — it touches on the heart of the U.S.-led effort to prevent China from gaining access to the cutting-edge tools necessary for high-performance chip manufacturing.

ASML’s EUV technology is the linchpin of modern semiconductor production, enabling the fabrication of the smallest and most complex microchips used in everything from smartphones to AI servers. These machines, which take years to develop and cost billions to build, are so critical that ASML holds a near-monopoly in the field, with no viable alternatives on the horizon. The U.S. government has long sought to block China from acquiring such technology, and if even one EUV machine were to end up in the wrong hands, it could represent a major breach of export controls.

  • The U.S. claims ASML may have shipped EUV-related components and transport equipment to China.
  • ASML insists that all its machines are either in use or have been returned.
  • The Commerce Department has not shared evidence of an actual EUV system on Chinese soil.

ASML’s CEO, Christophe Fouquet, has emphasized the company’s strict internal controls, including firewalls that prevent Chinese employees from accessing sensitive EUV technology. He argued that the complexity of EUV development — which required two decades of research — makes it nearly impossible for China to replicate the machines without direct access. This line of reasoning suggests that reverse engineering without a physical example would be an insurmountable challenge.

Yet the implications of this dispute extend beyond technical feasibility. The U.S. government has shown a growing interest in curtailing ASML’s dominance, evidenced by its recent investment in xLight, a startup developing next-generation light-source technology. While xLight’s CEO has framed the venture as a potential partnership with ASML, the company’s CEO, Fouquet, appears unconvinced. The federal government’s simultaneous scrutiny of ASML’s monopoly and its financial support for potential challengers raises questions about its true motivations.

As the geopolitical stakes rise, the outcome of this dispute could shape the trajectory of global semiconductor leadership. Whether the U.S. can prove its allegations or not, the mere suggestion that ASML’s technology might be in China underscores the fragile nature of the current export control regime. The world is watching — and the next chapter in this story could redefine the balance of power in the semiconductor industry.