Works to protect the country against terrorism and make sure the borders are safe?

The primary agency responsible for protecting the country against terrorism and ensuring border security is the Department of Homeland Security (DHS) in the United States. Within the DHS, agencies like Customs and Border Protection (CBP) and the Transportation Security Administration (TSA) play crucial roles in monitoring borders and screening transportation systems. Additionally, the Federal Bureau of Investigation (FBI) works to prevent terrorist threats through intelligence and law enforcement efforts. Together, these agencies collaborate to enhance national security and safeguard against potential threats.