NRA's Wayne LaPierre to call for Attorney General Eric Holder's resignation

The National Rifle Association has Attorney General Eric Holder in its sights.

Sources tell CBS News that NRA Executive Vice President Wayne LaPierre is expected to call for Holder's resignation in a speech Saturday morning at the Association's annual meeting in Pittsburgh.

NRA reacts to CBS News investigation on ATF "gunwalking"

LaPierre has accused Holder of trying to "destroy the Second Amendment" and has been critical of the Department of Justice handling of "Project Gunrunner," a program intended to stop the flow of weapons to Mexican drug cartels.

But as CBS News investigative correspondent Sharyl Attkisson reported last month, ATF agents charge the program actually helped get thousands of guns into the hands of criminals.

"When does it stop being law enforcement and start being a criminal enterprise? Innocent people are dying. It makes no sense at all." LaPierre told CBS News last month.

Agent: I was ordered to let U.S. guns into Mexico

Attorney General Holder has asked the Inspector General to investigate the allegations.

In a statement today the Department of Justice told CBS News "We have invited the NRA to join us and other stakeholders from across the spectrum in working to find common sense solutions to keep guns out of the hands of people who are not legally allowed to possess them. They have yet to come to the table with any productive suggestions, but we hope they will reconsider."

(Watch LaPierre's "gunwalking" comments from last month below.)