Which federal department is involved specifically with public safety and security?

The Department of Homeland Security (DHS) is the federal department specifically focused on public safety and security. Established in response to the September 11 attacks, DHS's mission includes protecting the nation from various threats, enhancing the nation's resilience to disasters, and ensuring that the government effectively prepares for and responds to emergencies.

The department combines numerous agencies and functions, including homeland security, immigration policies, border security, and emergency management, which are all integral to maintaining public safety and security.

While other departments, such as the Department of Justice and the Department of Defense, play roles related to public safety, they do not have the same primary focus as the DHS. The Department of Justice mainly addresses legal and criminal matters, while the Department of Defense is concentrated on military and national defense strategies. The Federal Emergency Management Agency (FEMA) is part of DHS and focuses on coordinated emergency responses but does not encompass the full scope of public safety and security efforts that DHS manages.