Rep. Jim Matheson (D-Utah) introduced a bill this week that would ban the sale of violent video games to minors.

The Supreme Court struck down a similar California law in 2011, ruling that the restriction violated the constitutional right to free speech.

Matheson’s Video Games Ratings Enforcement Act, H.R. 287, would make it illegal for anyone to ship, distribute, sell or rent a video game that does not bear a label from the Entertainment Software Ratings Board (ESRB) on the age-appropriateness of the game.

The ESRB, an industry self-regulatory group, already assigns age-based labels to video games, ranging from “C” for early childhood, “E” for everyone, “T” for teen, “M” for mature, and “AO” for adults only, but the system is entirely voluntary.

It is currently up to retailers to decide whether to sell violent or sexually explicit games to minors.