The White House is planning a three-day summit with gun violence prevention advocates Wednesday to discuss ways to reduce gun violence and provide guidance on how to enforce existing gun laws.

President Barack Obama will host a meeting of the Coalition for the Responsible Use of Gun Violence, an advocacy group that has been calling on Congress to pass tougher gun laws since at least 2008.

The summit will be a “once-in-a-lifetime opportunity for our nation to get a real sense of how we can reduce gun deaths and injuries,” the White House said in a statement.

The conference call will begin at 10 a.m.

ET and will be streamed live on the website.

Participants will include former U.S. Attorney General Eric Holder, former White House counterterrorism czar David Axelrod and former U