Pity lead House GOP investigator Rep. Darrell Issa of California. It’s his misfortune that he isn’t looking into matters about which the Obama administration can talk freely — namely, all its covert national-security programs.If Justice Department documents that Issa's committee seeks from Attorney General Eric Holder had been the subject of a top-secret meeting in the White House Situation Room, their contents already would’ve been splashed across the media. Issa could read the A-1 New York Times story and be done with it.But the Holder documents are an entirely different matter. They relate to the bizarrely misconceived Operation Fast and Furious, which allowed guns purchased from US shops to fall into the hands of Mexican drug gangs on the theory that . . . well, it's not clear exactly what the theory was. Somehow, the Bureau of Alcohol, Tobacco, Firearms and Explosives thought that letting 2,000 guns “walk” into the arsenals of bad actors with no means of tracking them would be a devastating blow against gun-trafficking.

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