Several congressmen sent another letter to the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) Wednesday, months after first requesting information about a failed undercover operation with similarities to Operation Fast and Furious. “Not only have you yet to provide us with any information or documents about this operation, but, months after ATF shut down the operation, you have refused to respond at all,” the letter states. House Oversight Committee chairman Darrell Issa (R., Calif.), Senate Judiciary Committee ranking member Charles Grassley (R., Iowa), Rep. Robert Goodlatte (R., Va.), and Rep. Jim Sensenbrenner (R., Wis.) signed the letter. Operation Fearless,...