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Issa: Fast and Furious probe ‘stonewalled’ by DOJ

Rep. Darrell Issa (R-Calif.) said he is frustrated by the lack of cooperation from the Department of Justice (DOJ) in investigating the "Fast and Furious" gun-tracking program

"We try. We send communications including subpoenas [to the Justice Dept.]. This is one of those situations in which they haven't admitted that they let guns walk even though there's no credible way to say they not only let them walk, they let them run," said Issa on Fox News' "On the Record with Greta Van Susteren" Wednesday.

Issa, who is chairman of the House Oversight and Government Reform Committee, has been leading an investigation into the Bureau of Alcohol, Tobacco, Firearms, and Explosives' (ATF) operation, which oversaw the sale of thousands of firearms to known and suspected straw purchasers for Mexican drug cartels.

He told Fox News that cooperation from the department has been "closer to zero percent."

The DOJ’s inspector general is conducting its own investigation of the operation.

Issa told Fox News that he believes the program had to have been approved at "top levels" within the Justice Dept. He said it was an exercise that required funding and coordination from many levels of law enforcement.

"Ultimately when you delay and deter us getting to the facts it's a cover-up. It's one that can be remedied, but so far we see no willingness by Attorney General Holder to tell his people to cooperate, just the opposite, we're still being stonewalled," Issa said.