A Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) agent who blew the whistle on the botched Fast and Furious gunrunning investigation and, according to lawmakers, was threatened with losing his job has successfully resolved a retaliation claim.

The family of U.S. Border Patrol Agent Brian A. Terry, killed by Mexican bandits at a site where investigators found weapons purchased during the Fast and Furious operation, said if Attorney General Eric H. Holder Jr. did not know about the investigation or its tactics, he should have and should now accept responsibility.

Federal agents testified to Congress on Wednesday that their superiors told them to stand down and watch as weapons flowed from gun dealers in Arizona to criminals and violent drug cartels in Mexico part of a now-discredited operation designed to catch gunrunners.