Prohibiting Social Media Manipulation Act

Requires large social media platforms to publicly post how they limit excessive account interactions, how their ranking algorithms weigh content quality and users' expressed preferences, usage and late-night notification statistics by percentile, and the results of product experiments on 1,000 or more users. A 2026 amendment adds a duty to explain the platform's age estimation process, effective July 1, 2027. Under a court-filed stipulation, the Attorney General agreed not to enforce the Act against NetChoice members until the court rules on NetChoice's preliminary-injunction request (NetChoice v. Ellison, D. Minn. No. 0:25-cv-02741).