HB 3393 Missouri House · 2026 Regular Session

Establishes the "Megan Meier Act"

HB 3393, the "Missouri Social Media Safety for Minors Act," requires social media platforms operating in Missouri to implement age verification for users under 18. Minors under 16 cannot create accounts without a parent or guardian, while those aged 16-17 need verified parental consent. Platforms must offer parents tools to monitor activity, delete accounts within 10 days, and restrict messaging from unverified adults. The bill also bans addictive features (like infinite scroll) and advertising to minors under 16, with violations subject to $50,000 fines per violation enforced by the attorney general.

Issues: ✓ Technology

Bill status in committee 1 of 4 stages cleared

Introduction

Feb 2026

Committee Review

Floor Vote

Governor

Introduced Feb 24, 2026 Last action Apr 2, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Introduced → House Committee Substitute · 5 edits

MODERATE

The bill was amended to combine HB 3393 and HB 2392, renaming the social media safety law to the 'Megan Meier Act' and adding new definitions for artificial intelligence. The committee substitute removed specific restrictions on online gaming chat and internet service providers from the social media platform exemptions, while adding a new section prohibiting AI systems from claiming they can provide mental health services.

Scope change

The bill now covers two related bills (3393 and 2392) and expands the scope of new definitions to include artificial intelligence, while narrowing the list of excluded services in the social media safety section.

REQUIREMENT

The official name of the social media safety law was changed from the 'Missouri Social Media Safety for Minors Act' to the 'Megan Meier Act'.

A new requirement was added prohibiting any person or entity from advertising that an AI system can act as a mental health professional or provide therapy services.

The specific exemption for 'online video gaming services with integrated chat where social interaction is incidental' was removed from the list of excluded services.

DEFINITION

New definitions for 'Artificial intelligence' and 'AI' were added to the bill text.

ELIGIBILITY

The list of services exempt from social media platform regulations was modified by removing the exclusion for 'educational platforms used by schools' and adding 'Internet service providers' to the list of excluded entities.

Floor votes

How they voted

No floor votes recorded yet.

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Apr 2, 2026

Lower · Passed

HCS Reported Do Pass (H) - AYES: 12 NOES: 1 PRESENT: 0

lower

Mar 30, 2026

Lower · Passed

HCS Voted Do Pass (H)

lower

Mar 5, 2026

Committee

Referred: Emerging Issues(H)

lower

Feb 24, 2026

Introduced

Introduced and Read First Time (H)

lower

1 primary · 0 co-sponsors