Toughest Semiconductor Export Controls Yet

• The House Foreign Affairs Committee has advanced the MATCH Act in what lawmakers are calling the largest markup on semiconductor export controls in congressional history.
• DUV lithography restrictions held firm. Washington is now targeting the tools China cannot build, not just the chips it cannot buy.

The headline number is 20 bills advanced in a single markup. But for Asia’s semiconductor industry, the one that matters most is still the MATCH Act, and what changed between introduction and vote tells you something about how difficult threading this needle actually is.

What got pulled back and what didn’t

Some provisions were rolled back before Wednesday’s vote, including a countrywide ban on the sale of cryogenic etching tools used to make chips to China. Restrictions on DUV machine exports, however, remained. That distinction matters enormously. Deep ultraviolet immersion lithography is the equipment that China cannot replicate domestically.

It’s ASML’s core product and the clearest chokepoint in the entire semiconductor supply chain. The cryogenic etch rollback signals that industry lobbying had some effect; the DUV restrictions holding firm signals that Washington is not backing away from the tools it considers genuinely strategic.

Micron Technology, the largest US memory chipmaker, was a driving force behind the legislation. Micron CEO Sanjay Mehrotra held a closed-door roundtable, according to reportswith members of the House Foreign Affairs Committee roughly a month before the vote, and held a similar meeting with Senate Banking Committee Republicans.

The company’s stake is direct: its Chinese competitors, CXMT and YMTC, have been acquiring chipmaking equipment through gaps in existing controls. The MATCH Act, if it becomes law, would designate those facilities as covered under Entity List-like restrictions, cutting off not just new sales but servicing and technical support as well.

Other industry players are also lobbying for the bill. Tokyo Electron, Lam Research, Applied Materials, and KLA–US toolmakers who lose revenue from export controls–have all engaged in the legislation. That tension is baked into the policy: the same companies that benefit from a level playing field also lose direct China sales when restrictions tighten.

The ally problem

The core logic of the MATCH Act hasn’t changed since its introduction. It would require US allies such as Japan and the Netherlands to more closely align with US restrictions on selling advanced semiconductor equipment to China, including ASML’s DUV immersion lithography machines.

The 150-day diplomatic window gives allies a structured deadline. If they demonstrate progress, the Act levels the playing field by extending controls to foreign-produced items using US software or components, the Foreign Direct Product Rule mechanism. If allies cannot demonstrate alignment, the United States would close the loopholes itself.

That’s what makes this bill more consequential than previous rounds of export controls. Past restrictions have targeted specific chips or specific companies. This one targets the manufacturing layer–the tools–and it reaches into allied supply chains in a way that previous rules did not.

BIS in the background

One thread that hasn’t received enough attention: Washington-based export control experts have noted that the Bureau of Industry and Security, which oversees export controls, has not been functioning as it should over the past year, holding off new restrictions during a detente with China tied to trade talks.

Congress advancing 20 bills in a single session is partly a response to that, a legislative push to establish controls that don’t depend on the executive branch’s appetite for enforcement. Whether the MATCH Act and the accompanying bills clear the full House and Senate is a separate question.

Wednesday’s committee vote is one step toward the bills potentially becoming law, not the finish line. The Senate introduced its own companion version in early April, with bipartisan backing from Senators Risch, Ricketts, Kim, and Schumer, which gives the legislative push unusual cross-aisle momentum.

TSMC, Samsung, and SK Hynix are already navigating annual export licences for their China fabs after their validated end-user exemptions expired at the end of 2025. The MATCH Act, if enacted, adds another layer to a regime that keeps tightening.

The bill still has a long road through the full House and Senate. But Washington’s direction is clear, and the industry is aware of it.