Which branch is primarily responsible for regulating immigration?

The Executive Branch is primarily responsible for regulating immigration due to its role in enforcing laws and policies related to immigration and naturalization. This branch includes agencies such as the Department of Homeland Security (DHS), which oversees immigration processes, enforces immigration laws, and manages border security. The Executive also sets regulations that dictate how immigration laws are applied, which includes visas, asylum processes, and deportation procedures.

While the Legislative Branch does have the power to create immigration laws, it is the Executive Branch that implements and enforces these laws in practice. The Judicial Branch primarily interprets laws and addresses disputes that arise regarding immigration only after the laws and policies are enacted and enforced. Local governments may have some roles in immigration enforcement, often in cooperation with federal authorities, but they do not have primary responsibility for immigration regulation at the national level.