The Trump administration suspects an ASML chipmaking machine made it into China. ASML says that's impossible.

Key Points:

• ASML, a leading chipmaking equipment manufacturer, is under scrutiny by the US Trump administration over concerns that its advanced extreme ultraviolet (EUV) lithography machines, barred from export to China, may have been illicitly shipped there.
• ASML denies shipping any EUV machines to China and highlights the technical complexity and strict handling procedures of EUV tools that prevent relocation without ASML's involvement, supported by a company document stating no EUV systems are in China.
• US officials remain skeptical, alleging ASML has exported specialized transport equipment and components related to EUV systems to China, though no concrete evidence or public enforcement actions have been disclosed.
• The dispute occurs amid broader US efforts to limit China's access to cutting-edge semiconductor technology, especially given the strategic importance of EUV tools for AI chip manufacturing and Huawei's ongoing challenges without them.
• Legislative efforts in the US Congress aim to impose stricter export controls on foreign suppliers like ASML, potentially banning certain shipments to China, but these face opposition from European governments and uncertain support from the Trump administration.