HF4400 Summary: Prohibiting Social Media Manipulation Act

• Applies to social media platforms with more than 10,000 monthly active users doing business in Minnesota, requiring algorithmic systems to prioritize user-expressed preferences and content quality ratings over engagement maximization.

• Mandates daily engagement limits for all account holders (set at two standard deviations above median) and stricter limits for new accounts (within 30 days) set at the 50th percentile of platform activity.

• Requires default privacy settings that restrict account discovery and content sharing to a user's existing extended network, prohibit contact from non-network members without user initiation, and block incorporation of user data into generative AI models without explicit consent.

• Establishes heightened protection options allowing users to disable engagement-boosting features (infinite feeds, autoplay, non-time-sensitive notifications) and prohibits displaying engagement counts on user-generated content.

• Requires platforms to publicly disclose algorithmic ranking system operations, engagement statistics at multiple percentiles, product experiment results, and provide accessible explanations for algorithmically promoted content; enforceable by Minnesota Attorney General with no private right of action; effective July 1, 2025.