While signed into law on Nov. 25, 2002, DHS was established as a direct response to the September 11th terrorist attacks to reorganize, unify, and strengthen national security efforts.
Core Missions:
Prevent Terrorism: Prevent terrorist attacks within the U.S. and reduce vulnerability to threats.
Secure Borders: Manage and secure the nation's borders, territorial waters, and air space.
Emergency Response: Lead in disaster preparation, management, and recovery (e.g., FEMA).
Cybersecurity/Infrastructure: Protect critical infrastructure and cyber networks.