The Alcohol and Tobacco Tax and Trade Bureau, statutorily named the Tax and Trade Bureau and frequently shortened to TTB, is a bureau of the United States Department of the Treasury. On January 24, 2003, the Homeland Security Act of 2002 (the Act) split functions of the Bureau of Alcohol, Tobacco and Firearms (ATF), into two new organizations with separate functions. First, the Act established The Alcohol and Tobacco Tax and Trade Bureau (TTB) under the Department of the Treasury. Second, the Act transferred certain law enforcement functions from Treasury to the Department of Justice. The ATF law enforcement functions were transferred to the Justice Department and were renamed the Bureau of Alcohol, Tobacco, Firearms and Explosives.