Fox News: Congress and the Department of Justice appear to be headed for a showdown this week over documents detailing Operation Fast and Furious, the botched gunrunning sting set up by the Bureau of Alcohol, Tobacco, Firearms and Explosives that funneled more than 1,700 smuggled weapons from Arizona to Mexico. The Justice Department has until Wednesday to deliver to congressional investigators a stack of records and emails naming the individuals responsible for the gun trafficking operation that may have killed dozens, if not hundreds of Mexicans, and is becoming a growing embarrassment for the Obama administration.