During an appearance on “Fox News Sunday,” host Chris Wallace asked Issa whether he had “any evidence” that the White House had been involved with the matter.

“No, we don’t,” Issa said.

The Justice Department’s Bureau of Alcohol, Tobacco and Firearms apparently allowed some gun sales in Arizona to known Mexican criminals. Two of the guns involved were found at the scene of a firefight in which U.S. Customs Agent Brian Terry was killed.

In February 2011, DOJ sent a letter to Congress denying such sales, but retracted that claim in December. It is not clear if either Attorney General Eric Holder or President Barack Obama were aware of the program, and Issa acknowledged Sunday that he has not found evidence Holder was involved.

“I did not say that Eric Holder always knew,” Issa said.

Issa previously suggested at a National Rifle Association conference that the Obama administration attempted to stir up controversy with Fast and Furious in an effort to push an assault rifle ban. This is despite the fact that the Bush administration, which opposed gun control, used similar programs.