Setting up a potential constitutional confrontation, a Republican-controlled House panel voted Wednesday to cite Attorney General Eric Holder for contempt of Congress, just hours after President Barack Obama invoked executive privilege ai??i?? for the first time ai??i?? to withhold documents demanded by the committee.

In a mounting confrontation with congressional Republicans, President Barack Obama invoked executive privilege Wednesday to withhold documents a House committee is seeking. The panel neared a vote on citing Attorney General Eric Holder for contempt.

President Barack Obama invoked executive privilege Wednesday to withhold documents a House committee is seeking in an investigation of a flawed gun-smuggling probe in Arizona.

A man accused of buying guns for a smuggling ring is expected to change his plea in the federal government's botched investigation known as Operation Fast and Furious.

A new sentencing date has been set for a man who bought rifles found at the scene of the fatal shooting of a Border Patrol agent and admitted to participating in a gun smuggling ring that was being monitored as part of the government's botched investigation known as Operation Fast and Furious.

The GOP-controlled House has made clear that it's unhappy with how long the Justice Department is taking to hand over documents regarding a U.S. gun-tracking operation in Mexico.

TUCSON a�� Two federal agents at the heart of a failed gunrunning investigation are blaming federal prosecutors for allowing illegal buyers to take the weapons to Mexico. The Arizona Daily Star reports that lawyers for ATF supervisors Bill Newell and David Voth sent letters to two members of Congress investigating Operation Fast and Furious last month, saying federal prosecutors blocked any efforts to arrest the suspected illegal buyers or to seize the guns before they reached Mexico.

Operation Fast and Furious was the fourth “gun–walking” investigation run by the Bureau of Alcohol, Tobacco, Firearms and Explosives in the Phoenix area, according to a congressional report released Tuesday.

The Justice Department is tightening procedures for responding to information requests from Congress in the aftermath of a troubled arms trafficking investigation.

Arizona legislators say they're looking into a flawed gun smuggling investigation because it took place within their state.