State Rep. Sherri Gallick, R-Belton

State Rep. Sherri Gallick, R-Belton, speaks in the Missouri House in March.

A bill requiring pornography websites to conduct age checks before granting access is headed to Missouri Gov. Mike Kehoe.

Commercial websites and platforms must already verify that users are at least 18 if more than a third of their content is sexually explicit as part of a rule enforced by Missouri Attorney General Catherine Hanaway since December.