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Regional Security Office

Diplomatic Security Service

The Diplomatic Security Service (DSS) is the law enforcement and security agency of the U.S. Department of State, charged with the mission of providing a safe and secure environment for the conduct of U.S. foreign policy.  All DSS agents are sworn federal law enforcement officers. 

Every diplomatic mission in the world operates under a security program designed and maintained by Diplomatic Security, as DSS is often known. In addition to creating a secure environment at U.S. diplomatic missions, DSS also investigates crimes with a nexus to the State Department, such as passport and visa fraud, conducts personnel security investigations, and protects the Secretary of State and high-ranking foreign dignitaries and officials visiting the United States.DSS also trains foreign civilian law enforcement officers in disciplines designed to reduce the threat and repercussions of terrorism throughout the world.

Through the Office of Foreign Missions, the bureau manages reciprocity and immunity issues for foreign diplomats in the United States. DSS's role evolves to meet new challenges. DSS special agents are the most widely represented United States federal agents in the world.