How should the nation regulate immigration?

The reasons for controlling the numbers of people crossing the borders into the nation include the need to (1) limit the burden on social institutions, in particular, schools, the police force, healthcare delivery systems and the welfare system, (2) assimilate newcomers into the society: where necessary, make them at least minimally proficient in the use of the language, inculcate the common values, employ them in socially useful jobs, and (3) augment the nation's pool of skilled and productive workers.

The uncontrolled movement of populations can lead to the disintegration of nations. A state that exercises no control over the entry of masses to its territories risks massive change and even annihilation.

The factors that may be used in determining whether a person is accepted as an immigrant to the nation are (1) the value of the applicant to the nation or, more specifically, the financial worth or educational qualifications of the applicant, (2) the plight of the applicant in the country from which he or she came, specifically, whether the applicant has been the victim of political, social, or religious oppression, (3) the presence of the applicant's relatives in the nation, and (4) the ability of the nation to assimilate the applicant: not only whether the applicant will fit in but also whether the nation can afford to support another citizen.