Which department coordinates national security, immigration enforcement, and disaster response?

• A. Department of Justice
• B. Department of Homeland Security
• C. Department of Defense
• D. Department of the Interior

Answer: (B)

It tests which federal department serves as the umbrella for homeland security, immigration enforcement, and disaster response. After 9/11, the United States created the Department of Homeland Security to bring these critical areas together under one agency. DHS coordinates national security efforts, oversees immigration enforcement through agencies like border protection and immigration enforcement, and leads disaster response and emergency management through FEMA. This integrated structure is designed to share information, plan collectively, and mobilize resources quickly during crises. In contrast, other departments focus on different primary missions—for example, Justice handles law enforcement and legal processes, Defense handles military defense, and the Interior manages natural resources and public lands. Because its mission centers on unifying and leading these interconnected functions, the Department of Homeland Security is the best fit for coordinating national security, immigration enforcement, and disaster response.