An immigration inspector is a government official who is responsible for screening and processing immigrants entering a country. Synonyms for an immigration inspector include immigration officer, border control officer, customs officer, and passport officer. These officials are authorized to verify the legitimacy of travel documents, conduct background checks, and question travelers about their intentions and reasons for visiting the country. In addition to these roles, immigration inspectors also have a duty to uphold national security and protect the country's borders against potential threats. Various agencies deploy immigration inspectors, including the Department of Homeland Security, Customs and Border Protection, and Immigration and Customs Enforcement.