The Obama Justice Department endangered public safety by allowing a renowned weapons smuggler to continue working for Mexican drug cartels even after the agency had more than enough evidence to indict him, according to a federal audit made public this week. As if this weren’t bad enough, the case is all the more outrageous because it involves the same preposterous strategy the administration used in the disastrous gun-running operation known as Fast and Furious. That once-secret program allowed weapons from the U.S. to be smuggled into Mexico so they could eventually be traced to drug cartels. Instead, federal law enforcement...