Why was DHS formed?

• A. Post-9/11 to unify domestic security, prevent terrorism, and improve coordination
• B. To regulate interstate commerce
• C. To negotiate international treaties
• D. To manage space exploration

Answer: (A)

The core idea is unifying how the United States protects the homeland. After the 9/11 attacks, it became clear that many security efforts were siloed across different agencies, making it harder to share intelligence, coordinate responses, and prevent terrorism. Creating the Department of Homeland Security brought many of these domestic security functions under one umbrella, aiming to improve coordination, unify efforts across border security, aviation security, emergency management, immigration, and more, and enhance overall readiness to prevent attacks and respond to disasters. That focus—strengthening domestic security through better coordination and information sharing—is why this option is the best fit. The other roles belong to different departments: regulating interstate commerce is handled by commerce- or trade-related agencies, negotiating treaties is a State Department function, and managing space exploration is NASA.