Federal immigration refers to the policies, laws, and regulations laid down by the federal government of a country regarding the movement of individuals across its borders. Synonyms for the term include national immigration, central immigration, and government immigration policies. Other terms that can be used in place of federal immigration include federal migration, federal mobility, or interstate migration. These phrases highlight the role of the government in regulating the movement of individuals within its territory and in determining the conditions under which foreign nationals may enter and stay in the country. Understanding these synonyms can help individuals better comprehend the intricacies of immigration policies and their impact on society.