Former Facebook executive Sarah Wynn-Williams has accused Meta of compromising US national security to grow its business in China.

Testifying before the Senate Judiciary Committee, Wynn-Williams alleged that company executives misled employees, lawmakers, and the public about their dealings with the Chinese Communist Party.

Wynn-Williams claimed Meta aimed to gain favour in Beijing while secretly pursuing an$18 billion venture there.

In her remarks, Wynn-Williams said Meta removed the Facebook account of Chinese dissident Guo Wengui under pressure from Beijing. While the company maintains the removal was due to violations of its policies, she framed it as part of a broader pattern of submission to Chinese demands.

She also accused Meta of ignoring security warnings linked to the proposed Pacific Light Cable Network, a project that could have allowed China access to United States user data. According to her, the plans were only halted after lawmakers intervened.

Meta has denied the claims, calling her testimony false and out of touch with reality. A spokesperson noted that the company does not operate in China and that Mark Zuckerberg's interest in the market had long been public.

The allegations arrive days before Meta's major antitrust trial, which could result in the breakup of its ownership of Instagram and WhatsApp.