Repelo V. Administrative and legal basis for the State Migration Service of Ukraine performance.

The scientific novelty of the obtained results is that the dissertation research is the first work in which the aspects of administrative activity of the State Migration Service of Ukraine are comprehensively and systematically considered. Based on the study, the conceptual provisions and theses submitted for defense were formulated, namely by the dissertation for the first time: the author's definitions were given to the conceptual and categorical apparatus regarding the administrative activity of the State Migration Service of Ukraine, including: administrative activity of the State Migration Service. - administrative, by-law, state-authoritative activity, which is regulated by administrative law and aimed at implementing state policy in the field of migration (immigration and emigration), including combating illegal (illegal) migration, citizenship, registration of individuals, refugees and other defined legislation of categories of migrants, provision of public services, as well as internal organizational activities aimed at ensuring the functioning of the system of the State Migration Service, its territorial bodies and territorial subdivisions (including interregional)".