# Sen. Tom Cotton asks US to block Chinese memory maker CXMT

> Cotton wrote to Commerce Secretary Howard Lutnick urging placement of CXMT on the Entity List, citing national security and market concerns.

Oossa · 2026-11-12 · https://oossa.com/en/sen-tom-cotton-asks-us-to-block-chinese-memory-maker-cxmt

Sen. Tom Cotton, the Arkansas Republican who chairs the Senate Republican Conference, sent a letter to Commerce Secretary Howard Lutnick asking the department to add ChangXin Memory Technologies (CXMT) to the Bureau of Industry and Security’s Entity List. The list would bar US firms from selling to CXMT and cut the company off from US technology. Cotton says CXMT’s growing share of the DRAM market – up from 4% to 10% between Q2 2025 and Q2 2026 – and its push into high‑bandwidth memory pose a risk to US economic and military interests.

## The facts

- CXMT’s DRAM market share rose to 10% in Q2 2026, up from 4% a year earlier (Counterpoint).
- Cotton’s letter to Secretary Howard Lutnick was sent on Thursday, Nov 12 2026 (CNBC).

## Why it matters

If CXMT is placed on the Entity List, US companies would be barred from supplying it, limiting the Chinese firm’s ability to expand its memory chip production.

## Sources & references

1. [Lutnick should ban Chinese memory maker CXMT from U.S., Sen. Cotton says](https://www.cnbc.com/2026/11/12/lutnick-cxmt-china-cotton.html) – CNBC, 2026-11-12

Last updated: 2026-11-12