Rep. Darrell Issa, California Republican and the Chairman of the powerful House Oversight Committee, expressed more confidence in his committee’s investigation into President Obama’s Department of Justice policies surrounding Project Gunrunner and Operation Fast and Furious, comparing it to the Iran-Contra scandal.

Issa told radio host Rick Amato that it is “not unprecedented” for government agencies, like the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), to refuse to honor Congressional subpoenas.

“This looks an awful lot like Iran Contra,” Issa said. “When a government agency makes a mistake they stall, delay and cover up. That’s what’s happening here.”

Issa reaffirmed his certainty that the decision to allow guns to “walk” into Mexico was one made in Washington, not in border cities or local ATF offices as DOJ officials have contended.

“We’re not done but what we do know is that the decision for this was not made in Tucson or El Paso or anywhere else,” he said. “It was made in Washington.”