If ever there is an example of hyper-partisanship, the recent personal attacks challenging the honesty and competence of Attorney General Eric Holder regarding the ATF’s errors in its “Fast and Furious” gun-tracking program should be Exhibit A. Fast and Furious was a Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) program in which guns were allowed to be illegally purchased so that they could be tracked to gun traffickers and Mexican drug cartel leaders. But the ATF, which now is supervised by the Justice Department, lost track of the guns — which were “allowed to walk,” as the parlance goes....