The Biden administration will come out with its long-awaited ghost gun rule aimed at reining in privately made firearms without serial numbers that are increasingly cropping up at crime scenes as soon as Monday, according to the report of the Associated Press.

Completion of the rule comes as the White House and the Justice Department have been under growing pressure to crack down on gun deaths and violent crime in the U.S.

The White House has also been weighing naming Steve Dettelbach, a former U.S. attorney from Ohio, to run the Bureau of Alcohol, Tobacco, Firearms and Explosives, or ATF, the people said. Biden had to withdraw the nomination of his first nominee, gun-control advocate David Chipman, after the nomination stalled for months because of opposition from Republicans and some Democrats in the Senate.

For nearly a year, the rule has been making its way through the federal regulation process. Gun safety groups and Democrats in Congress have been pushing for the Justice Department to finish the rule for months. It will probably be met with heavy resistance from gun groups and draw litigation in the coming weeks.

The exact timing of the announcement hasn't been set, the people said. They could not discuss the matter publicly and spoke to AP on condition of anonymity. The White House declined to comment.

On Sunday, the Senate's top Democrat, Sen. Chuck Schumer, of New York, implored the administration to move faster.

"It's high time for a ghost gun exorcism before the proliferation peaks, and before more people get hurt or worse," Schumer said in a statement. "My message is a simple one: No more waiting on these proposed federal rules." Ghost guns are "too easy to build, too hard to trace and too dangerous to ignore.”

Justice Department statistics show that nearly 24,000 ghost guns were recovered by law enforcement at crime scenes and reported to the government from 2016 to 2020. It is hard to say how many are circulating on the streets, in part because in many cases police departments don't contact the government about the guns because they can't be traced.

The rule is expected to change the current definition of a firearm under federal law to include unfinished parts, like the frame of a handgun or the receiver of a long gun.

In its proposed rule released last May, the ATF said it was also seeking to require manufacturers and dealers who sell ghost gun parts to be licensed by the federal government and require federally licensed firearms dealers to add a serial number to any unserialized guns they plan to sell.