New FBI Director Kash Patel was sworn in Monday as acting chief of the Bureau of Alcohol, Tobacco, Firearms and Explosives, taking the helm of two separate and sprawling Justice Department agencies, according to a person familiar with the matter.

Kash Patel, who has received support from the Gun Owners of America lobby group for championing gun rights, would be expected to lead an overhaul of the agency, shifting its focus away from regulating firearms.