Rep. Michael Baumgartner (R-WA) led introduction of the Multilateral Alignment of Technology Controls on Hardware (MATCH) Act in the House on April 2, 2026, with parallel Senate introduction planned. The bill would impose a China-wide ban on exports of deep ultraviolet (DUV) lithography equipment and associated services, close loopholes created by Dutch and Japanese equipment suppliers selling to Chinese blacklisted entities, and designate additional chokepoints within 60 days. ASML was China's largest customer in Q4 2025 at 36% of net system sales; Chinese manufacturers like SMIC already operate hundreds of DUV machines capable of producing very advanced AI chips at scale. For financial institutions, this represents a material tightening of the structural constraint on China's domestic AI chip supply, with potential secondary effects on allied equipment vendors, Chinese chipmaker gross margins, and the credibility of US export-control enforcement.
414 other tracked developments touching the same claims.