Meta heads to trial in California federal court in a 29-state lawsuit over Facebook and Instagram’s effects on young users

Meta Platforms is scheduled to go to trial in California federal court on Tuesday as a coalition of 29 U.S. states pursues claims that Facebook and Instagram have harmful effects on young users. The case, framed by the states as a consumer protection and youth-safety matter, seeks court intervention over how the platforms are designed, promoted, and managed for teenagers and children.

The lawsuit targets Meta’s core social products. Facebook and Instagram are among the largest consumer apps in the United States, and both rely on personalized feeds and engagement-driven features to keep users watching and interacting. The states’ complaint, according to coverage of the dispute, positions these engagement mechanics as a driver of negative outcomes for minors.

For Meta, the trial represents another major legal test of how regulators and state attorneys general view the company’s approach to child safety. In recent years, large platform companies have faced multiple waves of scrutiny, but this matter is distinct in its focus on the specific impact of Facebook and Instagram on young users and the responsibilities that come with operating widely used social networks.

Meta has not, in the information provided for this story, offered detailed public disclosures about its trial strategy or the specific factual issues it expects the court to decide. What is clear from the reported timeline is that the states are pushing the dispute into a formal evidentiary process, where questions about product features, internal systems, and outcomes for minors may become central.

A trial in federal court also raises the stakes beyond the individual parties. Even when a case is brought by states, the legal reasoning can influence how other regulators evaluate platform conduct, especially when plaintiffs argue that companies should take affirmative steps to reduce risks to children and teens.

Meta’s broader compliance context includes the fact that it operates a suite of consumer services, including messaging and video products, alongside Facebook and Instagram. The company also publishes ongoing public-facing material about safety efforts and product policies, but the specifics of any measures that are at issue in the 29-state case were not described in the available reporting.

One open question is what remedies the states are seeking once the evidence is presented. Court filings in cases like this can range from demands for changes in product design to requirements about disclosures, enforcement mechanisms, or marketing practices tied to minors. The available information does not specify those remedy requests or the scope the plaintiffs may ask the judge or jury to order.

As the trial begins, investors and policy watchers will be watching not only for the immediate legal outcome, but also for what the process reveals about how Meta evaluates and responds to youth risk. The company’s disclosures, witness testimony, and any court-ordered steps (if any) could reshape how platforms think about compliance expectations for engaging minors.