This study aims to analyze gaps in immigration policy at Immigration Checkpoints (TPI) in Indonesia and their impact on the supervision of foreign nationals (WNA). The research employs a qualitative approach with a critical realist paradigm, using literature review and document analysis methods. Data were obtained from laws and regulations, scientific journals, and official reports related to immigration. The results indicate that there are various gaps in the immigration system, particularly in document verification, data integration among agencies, and the monitoring of foreign nationals’ activities. These gaps are exploited by foreign nationals to commit violations such as visa misuse, overstaying, and other illegal activities. In addition, weak inter-agency coordination and the suboptimal use of technology further exacerbate these issues. From the perspective of state sovereignty, these policy gaps pose potential threats to national security. Therefore, strengthening regulations, enhancing supervision, and implementing an integrated digital immigration system are necessary to close existing policy gaps and improve the effectiveness of immigration management in Indonesia.
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