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What does Homeland Security do?

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Quick Answer

The Department of Homeland Security is responsible for securing the United States from threats with employees working in aviation, border security, emergency response, chemical facilities and enforcement of cyber security, according to its official website. As of 2014, Homeland Security employs more than 240,000 security specialists.

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Full Answer

Homeland Security works to prevent terrorism and enhance security by screening passengers at airports; conducting waterborne patrols; monitoring radiation portal monitors; training law enforcement and federal agents; reviewing intelligence information to ward off potential threats; and evaluating reports of suspicious activities in the United States and globally, explains the Department of Homeland Security. Homeland Security also monitors U.S. borders by inspecting travelers, seizing narcotics and illegal materials and managing vessels through the Marine Transportation System.

In addition, Homeland Security enforces immigration laws by seizing undeclared currency at borders, litigating cases in immigration courts, processing applications for immigration benefits and naturalizing new U.S. citizens, notes the Department of Homeland Security. Safeguarding cyberspace is another role of Homeland Security by investigating cyber threats, developing education curriculum for cyber risk mitigation and providing on-site support to information technology specialists. Disaster recovery response is also under the purview of Homeland Security. Homeland Security works to provide support for communities during natural disasters by training its employees to provide emergency assistance when working with weapons of mass destruction; agriculture and food protection; and citizen preparedness.

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