The U.S. Justice Department’s inspector general said a flawed undercover sting in Milwaukee appears to raise “significant management issues relating to the oversight and management” of the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, reports the Milwaukee Journal Sentinel. Inspector General Michael Horowitz said problems revealed in the Milwaukee operation by a Journal Sentinel investigation are of particular concern given the agency’s failures in its Operation Fast and Furious. In that operation, agents in Arizona encouraged the sale of more than 2,000 firearms to gun traffickers but lost track of many of the weapons. Many ended up at crime scenes in Mexico and at the scene where a U.S. Border Patrol agent was killed. Horowitz’s letter to Congress is the strongest connection between the failures of Fast and Furious and the operation in Milwaukee last year, which was beset by a series of foul-ups and failures, including agents having their guns stolen, the undercover storefront being burglarized and sensitive law enforcement documents being carelessly handled. Members of Congress from both parties have demanded answers about the Milwaukee operation from ATF and Attorney General Eric Holder.