US President Joe Biden is set to issue an executive order that aims to increase the number of background checks conducted before firearm sales.
It aims to move the US “as close to universal background checks as possible without additional legislation”.
The Democratic president will sign the measure during a visit Tuesday to Monterey Park, California, where a gunman killed 11 people in January.
Action on gun control appears unlikely in a divided Washington.
Last year, Mr Biden signed a cross-party gun violence reduction measure into law and he has repeatedly asked Congress to do more about what he calls an “epidemic”.
But his call for an assault weapons ban, universal background checks on gun sales and repealing gun manufacturers’ immunity from prosecution are unlikely to make headway while Republicans control the US House of Representatives.
Mr Biden’s executive order – a law a US president can enact without Congress – acknowledges this political reality and lays out a series of actions within his authority, beginning with the expansion of background checks.
Universal background checks – or the requirement to run a gun buyer’s information through an FBI database before a sale is made – are seen as key to closing legal loopholes that allow prohibited purchases.
Tuesday’s order also calls for a proposal on how the federal government can meet the short and long-term needs of a community impacted by mass shootings, similar to how authorities respond to natural disasters.
The order further aims to crack down on gun sellers who break the law.
Mr Biden will direct the US attorney general to clarify the statutory definition of who is “engaged in the business” of dealing in firearms, to devise a plan that prevents firearms dealers whose licenses were revoked from continuing to sell, and to name and shame firearms dealers who are breaking the law.
Separately, the measure asks the Federal Trade Commission to issue a report on how gun manufacturers target civilians, especially minors.
It also aims to reduce the theft or loss of firearms during shipment between dealers, and mandate better reporting of ballistics data so law enforcement can match shell casings to the guns from which they were fired.
The order includes a call for raising public awareness over “red flag” laws, also known as extreme risk protection orders. Signed in 19 states and the District of Columbia, these laws allow individuals to petition a court to temporarily confiscate guns from people with potentially violent or harmful behaviour.
Last month, the Justice Department sent out more than $200m to help states administer their red flag laws.
Gun control campaigners reacted positively to news of the executive order.
“These executive actions would improve community safety, hold the gun industry and rogue gun dealers in our communities accountable, and save lives,” the Everytown coalition wrote on Twitter.
The Moms Demand Action grassroots group added that the order will “double down on the progress made” in last year’s bill.