(AP) — President Donald Trump revived a debate over the link between gun violence and graphic depictions of violence in video games Thursday, bringing members of the video game industry and some of their most vocal critics to the White House.

Trump kicked off the meeting in the afternoon, but unlike with recent White House discussions on violence did not open it to journalists.

As he searches for ways to respond to last month’s Florida school shooting, Trump has bemoaned the violent images readily available to kids such as his 11-year-old son. But decades of research has failed to find a link between gun violence and graphic depictions of violence in video games.

Those expected at the meeting from the video game industry include representatives of the Entertainment Software Association and the Entertainment Software Rating Board and two CEOS of video game publishers, both of whom are on the association’s board.

Three Republican lawmakers are expected, including Florida Sen. Marco Rubio.

Also attending are a representative of the Parents Television Council, a conservative watchdog group, as well as conservative activist Brent Bozell — a longtime critic of video game violence who founded the council — and the author of a book linking mass killings to violent video games.

Both sides have made arguments in advance of the event.

The Parents Television Council’s program director, Melissa Henson, said in a statement that she will attend on behalf of “parents who witness daily how the deck is stacked against them when it comes to all forms of violent media.”

The Entertainment Software Association released a statement saying studies “have found no connection between games and real-life violence” and noting that games are played in other countries that don’t have the same level of gun violence. They expressed hope that the meeting will “provide the opportunity to have a fact-based conversation about video game ratings … and the tools we provide to make informed entertainment choices.”

Trump has focused on video games as he seeks solutions to deal with the scourge of guns in the wake of the Florida school shooting that killed 17 people. After weeks of public deliberation — including expressing support for some gun control measures — Trump has not yet outlined what he would like to see in legislation.

During a Cabinet meeting Thursday, Trump congratulated Florida on school safety legislation approved by state lawmakers, saying the state “passed a lot of very good legislation last night.”

The measure would raise the minimum age to buy rifles from 18 to 21 and create a waiting period on weapons sales. It also would create a so-called guardian program, enabling school employees and many teachers to carry handguns if they go through law enforcement training and their school districts agree to participate. Republican Gov. Rick Scott has not said if he will sign the bill.

Trump also said the White House is working to ban “bump stocks” and said efforts to enhance background checks are “moving along well” in Congress. No votes have been scheduled yet in the Senate on a pending background checks bill, but the House has said it will consider school safety legislation next week.

This is not the first time Washington has focused on video game violence.

In 2013, after the shooting at Sandy Hook elementary school in Newtown, Connecticut, Vice President Joe Biden held three days of wide-ranging talks on gun violence prevention, including a meeting with video game industry executives. After the 2013 meetings wrapped up, the White House called for research on the effect of media and video games on gun violence, but nothing substantial came out of that.

While Trump has suggested rating both games and movies for violence, ratings already exist.

Following an outcry over violent games such as 1992’s “Mortal Kombat,” the Entertainment Software Ratings Board was established in 1994 by the Entertainment Software Association to give each game a rating based on five categories ranging from “E” for “Everyone” to “Adults Only” for those 18 and older.

In 2011, the Supreme Court rejected a California law banning the sale of violent video games to children. The decision claimed that video games, like other media, are protected by the First Amendment.

Trump has invoked his son Barron as he speaks about video games. At a recent meeting on school violence, he said: “The video games, the movies, the internet stuff is so violent. It’s so incredible. I see it. I get to see things that you wouldn’t be, you’d be amazed at. I have a young, very young son, who, I look at some of the things he’s watching, and I say, how is that possible?”