Following the explosive response to her tell-all memoir, an ex-Facebook director-turned-whistleblower testified before Congress on Wednesday alleging Facebook’s close relationship with China poses serious risks to U.

Meta whistleblower Sarah Wynn-Williams accused the company of collaborating with the Chinese Communist Party to create censorship tools. She claimed executives prioritized business over U.S. values, while Meta denied these allegations as false and emphasized they do not operate in China today.

Wynn-Williams alleges that Meta built custom censorship tools for the Chinese government, enabling extensive control over content moderation.