The Department of Homeland Security (DHS) has a vital mission: to secure the nation from the many threats it faces. DHS helps the country by:
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Helping when disaster strikes: DHS works to prepare for and respond to natural and man-made disasters.
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Protecting the economy: DHS works to protect the countrys economic infrastructure, including transportation systems, financial institutions, and cyber networks.
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Protecting U.S. borders: DHS is responsible for securing the countrys borders and enforcing immigration laws.
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Securing cyberspace and critical infrastructure: DHS works to protect the countrys cyber networks and critical infrastructure, such as power grids and water systems.
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Counterterrorism: DHS is responsible for protecting the country from terrorist attacks.
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Aviation security: DHS works to ensure the safety and security of the countrys aviation system.
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Port security: DHS is responsible for securing the countrys ports and waterways.
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Maritime security: DHS works to protect the countrys maritime transportation system.
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Administration and enforcement of immigration laws: DHS enforces immigration laws and processes applications for visas, citizenship, and other immigration benefits.
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Protection of national leaders: DHS is responsible for protecting the President, Vice President, and other high-ranking government officials.
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Detection of and protection against chemical, biological, and nuclear threats to the homeland: DHS works to protect the country from chemical, biological, and nuclear threats.
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Response to disasters: DHS works to prepare for and respond to natural and man-made disasters.
DHS is led by the Secretary of Homeland Security, who is responsible for overseeing the departments many components, including TSA, Customs and Border Protection, Immigration and Customs Enforcement, U.S. Citizenship and Immigration Services, FEMA, the Coast Guard, Secret Service, Federal Law Enforcement Training Centers, the National Protection and Programs Directorate, and the Science and Technology Directorate.
