AmoxtliCalifornia introduces age verification law for all operating systems, including Linux and SteamOS — user age verified during OS account setup
Enforcement against Linux distributions, however, is likely to be problematic. Distros like Arch, Ubuntu, Debian, and Gentoo have no centralized account infrastructure, with users downloading ISOs from mirrors worldwide, and can modify source code freely. These small distros lack legal teams or resources to implement the required API, so a more realistic outcome for non-compliant distros is a disclaimer that the software is not intended for use in California.
They, eh, want for every local user account to be tied to some central database?
In general this is going out of hand, age verification is parents’ responsibility.