Which agency is responsible for protecting the nation’s borders and immigration enforcement?

The agency responsible for protecting the nation’s borders and enforcing immigration laws is the Department of Homeland Security. This department was established in response to the events of September 11, 2001, with the primary goal of ensuring the United States' safety from various threats, including terrorism and illegal immigration. One of its key components is U.S. Customs and Border Protection (CBP), which actively monitors and manages the movement of people and goods across U.S. borders. Additionally, the department oversees agencies that handle immigration services and customs enforcement.

On the other hand, the Department of State primarily deals with foreign relations and diplomacy, the Federal Bureau of Investigation focuses on federal criminal investigations and domestic intelligence, and the Department of Justice manages federal law enforcement and legal affairs. While these entities play important roles within the broader framework of national security and law enforcement, the specific responsibility for border protection and immigration enforcement lies with the Department of Homeland Security.