Department of Justice

FBI Seal/logo. National Security Branch.

The Attorney General and various components of the Department of Justice work to ensure that national security-related activities of the United States are consistent with relevant law; work to prevent, disrupt, and defeat terrorists operations before attacks occur; handle terrorism, counterespionage, counterproliferation, war crimes, and counter-drug and other national security investigations and prosecutions; obtain court authorization for the collection of foreign intelligence under the Foreign Intelligence Surveillance Act (FISA); conduct oversight of intelligence agency compliance with certain national security legal requirements; and provide specialzed expertise in international training. Statutory authority for the Department of the Justice is found in Title 28 of U.S. Code.