U.S. Rep. Jim Matheson wants to make it a federal crime for a retail outlet to sell a "mature" or "adult" rated video game to underage children.

Matheson, D-Utah, said he will not try to control the content of violent or sexually explicit video games, a multibillion-dollar industry in the United States. Rather, he'll try to stop the purchase of hard-core games by minors.

"The industry already has its own rating system," much like the current movie rating system, Matheson said. He will just incorporate the video game rating system into his new bill, which the congressman told the Deseret Morning News' editorial board on Wednesday is drafted but not yet introduced.

"I'm just going to say you have to ID (the buyer) for any 'mature' or 'adult only' rated games," Matheson said. His bill will also require that any video game sold in the United States have the current rating system classification prominently displayed on the box, so buyers know what they are getting.

A spokesman for the Entertainment Software Association, the trade association that represents the video game industry, said he couldn't comment on Matheson's bill since he hasn't seen a written copy of it.

In its 2005 Video Game Report Card, the National Institute on Media and the Family says of the fast-growing video game industry: "For the past several years, the most popular games have been ultra-violent first-person shooters, exactly the games that seem to be the most harmful to young players.

"Disturbingly, these games, including several in the widely known Grand Theft Auto series, are the very same games that our research has found are most popular with kids. In other words, the industry's power and profits have come at the expense of children's welfare."

In a way, Matheson's new bill is a companion measure to his already-introduced bill that would require age-certification access (and would tax) adult material on the Internet.

Matheson said parents probably have little idea what kind of video games their teens and preteens are purchasing and playing.

Some of the games are pretty rough stuff. And minors should not be buying adult games without parental supervision, Matheson said.

Since that is not happening in many cases, there is a place for government to ensure that at the very least the young buyers are being checked at the cash register or when they use credit cards to buy online, Matheson said.

"You know darn well" that in most cases "the 13-year-old is not being carded when he buys 'Grand Theft Auto 2,' " Matheson said.