Cotton Asks Commerce to Expand Restrictions on Chinese Chipmaker CXMT

Sen. Tom Cotton asked Commerce Secretary Howard Lutnick to take additional action against ChangXin Memory Technologies (CXMT), a Chinese dynamic random-access memory (DRAM) manufacturer. In a letter dated November 12, 2026, Cotton requested that the U.S. Department of Commerce add CXMT to the Entity List, which he said would broadly deny the company access to U.S. technologies and technical support, including semiconductor manufacturing equipment and tools for its fabs. He also encouraged the department to use its information and communications technology and services (ICTS) authorities to explore a prohibition on U.S. sales of CXMT products. The request is a policy appeal, not a final agency determination or an announced procurement requirement.

Cotton’s letter describes CXMT as a state-subsidized DRAM producer and argues that its technology could support China’s Military-Civil Fusion strategy. He cites existing U.S. measures: the Department of War’s designation of CXMT on its Section 1260H list of Chinese military companies, Bureau of Industry and Security (BIS) end-use controls restricting exports of certain advanced technologies to some CXMT fabs, and limits on government procurement of CXMT products in the FY2023 National Defense Authorization Act. These measures have distinct scopes. Contractors should not treat the requested Entity List addition or a possible ICTS sales prohibition as already in effect, and should separately assess obligations under the restrictions that currently apply.

The letter also points to reported plans for CXMT to produce High Bandwidth Memory 3 Extended (HBM3E). Cotton says the chips perform poorly against competitors’ equivalents and that manufacturing yields are around 20 percent, presenting those details as evidence of the company’s push to enter advanced memory markets despite production challenges. The claims and characterization are attributed to the senator’s letter and the reporting it cites. For government buyers and contractors, the development is relevant because memory components can be embedded in systems and pass through multiple tiers of suppliers; a potential expansion of restrictions could therefore prompt updated sourcing reviews, supplier declarations, and compliance checks.

There is no new solicitation, contract award, funding announcement, or immediate change to procurement rules in this signal. GovCon teams should monitor Commerce and BIS announcements for any formal action, review whether CXMT products or related technologies appear in bills of materials, and distinguish existing statutory and export-control requirements from measures Cotton is asking the department to consider. If Commerce acts, contractors may need to reassess sourcing, authorizations, delivery schedules, and representations concerning covered products or technologies. Until then, the letter indicates a possible direction of policy, rather than a new compliance mandate or contracting opportunity.

• Requested action: Cotton asked Commerce to add CXMT to the Entity List and consider an ICTS-based prohibition on sales of CXMT products.
• Entity List rationale in the letter: Cotton seeks to deny CXMT access to U.S. technologies and technical support, including semiconductor manufacturing equipment and tools for its fabs.
• Existing military-related designation: The letter says the Department of War placed CXMT on its Section 1260H list of Chinese military companies.
• Existing export controls: BIS end-use controls restrict exports of a variety of advanced technologies to some CXMT fabs.
• Procurement baseline: Cotton cites FY2023 NDAA limits on further government procurement of CXMT products; contractors should assess these separately from proposed additional restrictions.
• Technology area: CXMT is described as a DRAM maker, with the letter citing reported plans to produce HBM3E memory.
• Performance figures cited: Cotton says CXMT’s HBM3E performs poorly relative to competitors’ products and has manufacturing yields of approximately 20 percent.
• Supplier action: Government contractors and suppliers can review memory-chip sourcing, bills of materials, and upstream supplier disclosures for potential CXMT exposure.
• Status: No new Entity List action, ICTS prohibition, solicitation, contract, or award is announced; monitor formal Commerce and BIS notices for any change.