President Obama's nominee to head the Bureau of Alcohol, Tobacco, Firearms and Explosives arrived in Washington D.C. Tuesday to begin meeting with Justice officials, amid media reports of the exit of the agency's acting director.
CNN reported Monday that Kenneth Melson, the ATF's acting director, is expected to resign due to the political fallout from the "Fast and Furious" operation, which targeted Mexican gun traffickers but has been linked to the killing of a U.S. law enforcement officer. Republicans in Congress have criticized the ATF's handling of the investigation.