1. Short title This Act may be cited as the Illicit Arms Trafficking Security Enforcement Act . 2. Border Enforcement Security Task Force unit for arms smuggling (a) Establishment Not later than 180 days after the date of the enactment of this Act, the Secretary of Homeland Security shall, pursuant to section 432 of the Homeland Security Act of 2002 ( 6 U.S.C. 240 ), establish, in consultation with the National Targeting Center of U.S. Customs and Border Protection and the Bureau of Alcohol, Tobacco, Firearms and Explosives of the Department of Justice, a Border Enforcement Security Task Force unit to investigate transnational criminal organization arms smuggling across the international border between the United States and Mexico. (b) Purposes The Border Enforcement Security Task Force unit established in accordance with subsection (a) shall focus on the following: (1) Reducing arms smuggling of weapons, weapon parts, munitions, explosives, and related items from the United States to Mexico. (2) Apprehending, or working with relevant law enforcement to apprehend, arms smugglers within the United States or crossing from the United States to Mexico. (3) Ensuring coordination with the Bureau of Alcohol, Tobacco, Firearms, and Explosives to receive comprehensive data on seized firearms in Mexico through an electronic tracing system or a successor system. (4) Deconflicting arms trafficking investigations between the Department of Homeland Security and the Department of Justice. (c) Composition The Border Enforcement Security Task Force unit established in accordance with subsection (a) shall be composed of the following: (1) U.S. Customs and Border Protection. (2) U.S. Immigration and Customs Enforcement, led by Homeland Security Investigations. (3) Other Department of Homeland Security personnel, as appropriate. (4) The Bureau of Alcohol, Tobacco, Firearms, and Explosives, with the approval of the Attorney General. (5) Other Federal, State, local, Tribal, and foreign law enforcement agencies, including Mexican law