FILE PHOTO: An Intel logo and a computer motherboard appear in this illustration taken August 25, 2025.
| Photo Credit:
Dado Ruvic

A bipartisan group of US lawmakers led by Democratic Senator Elizabeth Warren ​and Republican Tom Cotton on Wednesday raised national security concerns over Intel’s testing of chipmaking ‌tools made by ACM Research, as first reported by Reuters.

ACM Research, ​California-based producer of chipmaking equipment, has deep roots in China ⁠and two overseas units that were targeted by US sanctions. Its customers include sanctioned Chinese companies such as YMTC and SMIC, sparking questions over whether ACM could pass sensitive information ‌from Intel to Chinese customers, the lawmakers said.

“By operating in Intel’s facilities, ACM could gain exposure to cutting-edge chipmaking processes that may ‌materially improve the quality and competitiveness of ACM and Chinese military companies,” the ‌lawmakers ⁠said in a letter to Intel CEO Lip-Bu Tan dated ⁠Wednesday.

Intel said in a statement that “ACM tools are not used in Intel’s semiconductor production processes,” adding that the company fully complies with US laws and regulations and engages regularly with the US ​government on security matters.

ACM did ‌not immediately respond to a request for comment for this story.

The company previously said it could not comment on “specific customer engagements,” but said it has disclosed the shipment of three tools to a “major US-based semiconductor manufacturer,” ‌which are being tested and some have met performance standards.

ACM said previously ​that it does not pose a national security threat, noting that its US operations are “bifurcated and isolated” from the sanctioned Shanghai-based ⁠unit, adding that US customers are supported directly by US personnel, with robust safeguards to protect customer trade secrets.

The Chinese Embassy in Washington did not immediately respond ‌to a request for comment.

The letter, also signed by Democrats Elissa Slotkin and Andy Kim as well as Republicans Jim Banks and Pete Ricketts, is a sign of bipartisan concern about China’s growing role in US semiconductor manufacturing.

The House Selection Committee on China said in October it has “reviewed with concern reports that ACM Research … has sold (semiconductor manufacturing equipment) to a semiconductor manufacturer with US ‌operations that also formally certified ACM Research’s tools for use in its production line.”

The ​lawmakers on Wednesday also noted that Intel, which fended off calls for its CEO’s resignation from US President Donald Trump in August over ⁠his alleged ties to China, faces unique responsibilities, since the US government now ⁠owns a stake in it.

“This raises important questions about Intel’s fiduciary responsibility and approach to safeguarding the public interest, including how the company benefits ‌American economic interests and taxpayers,” they wrote.

“Intel’s entanglements with blacklisted Chinese companies calls into question whether taxpayer dollars are subsidising activities that could directly threaten ​US national security and leadership in semiconductor manufacturing,” they added.

Published on March 5, 2026