The administration is encouraging state officials to establish their own state-level gun violence prevention offices; to invest in gun violence prevention, such as community violence intervention programs; to bolster support for survivors and victims affected by gun violence; to push for safe storage and reporting of lost and stole firearms; and to enact legislation to strengthen background checks and ban assault weapons and high-capacity magazines.

“These are all policies where the White House in this administration have made progress at the federal level,” said Stefanie Feldman, the director of the White House Office of Gun Violence Prevention, in a call with reporters. “And we are going to continue to call on Congress to act but in the meantime, we are going to be working hand in hand with states to advance all these agenda items.”

Harris will highlight two new executive actions from the Department of Justice as part of the announcement. The first provides states with safe storage model legislation, detailing how states can require safe storage of guns — and hold people legally responsible for injury caused by an unsecured weapon. The second offers a model for the reporting of lost and stolen firearms, in an effort to assist law enforcement in investigating and prosecuting crimes.

Both the president and vice president have talked repeatedly about safe storage laws. The majority of K-12 shooters use firearms they’ve obtained from their home or the home of a friend, Feldman noted, and the White House believes these laws can not only reduce school shootings but also suicide by firearm. And for the administration’s push on lost or stolen firearms, a Department of Justice official said it can help local and state law enforcement solve crimes and also “identify recurring patterns,” such as firearms trafficking.

The new actions from the White House gun office come on the heels of a string of mass shootings this fall, adding to the long list of 636 in this year alone, according to the Gun Violence Archive.

While President Joe Biden has signed a slew of executive orders to date, the administration’s latest effort encourages state-level policy changes — a response, in part, to inaction from Congress and increasingly protective rulings on gun possession and ownership from the courts. Many gun safety experts see more appetite for policy changes at the state level in the near term.

“All across the country — in Memphis, in Nevada, in Chicago, all parts of the country — each one of the tragedies that have been in national headlines recently have demonstrated how important it is to have strong federal legislation but also strong state and local legislation,” a senior administration official told reporters, previewing the announcement. “And we certainly want to show up as partners for states to help them advance their efforts to save lives.”

The White House invited a bipartisan group of legislators from across the country to attend Wednesday’s event, the senior administration official said. Legislators from Maine are expected to be in attendance, just months after a shooter killed 18 people in Lewiston.

Shia Kapos contributed to this report.