3. DETENTION OF FOREIGN NATIONALS IN THE SEMARANGBANGLADESHI FAKE VISA CASE AS AN IMPLEMENTATION OFIMMIGRATION LAW ENFORCEMENT IN INDONESIA

Abstrak

This study aims to analyze detention practices regarding foreign nationals (WNA)
in the case of a forged visa used by Ruhilul Amin, a Bangladeshi national who entered
Indonesia using documents inconsistent with immigration databases; the discrepancy was only
detected when he applied for a residence permit extension at the Class I Special Immigration
Office (TPI) in Semarang. Findings indicate that multi-layered administrative checks—including
visa code verification, document metadata analysis, and biometric screening—served as the
primary mechanisms for identifying data mismatches that pointed to suspected document
forgery. The study also highlights the pivotal role of "Operation Jagratara Phase II" in identifying
RA as the sole violator subjected to *pro justicia* proceedings, with detention utilized as an
administrative instrument to ensure the continuity of the investigation in accordance with Law
Number 6 of 2011 concerning Immigration. Employing a descriptive qualitative approach and
the theoretical framework of Global Governance, the study concludes that immigration law
enforcement relies on the integration of digital checks, field operations, and detention authority;
it further emphasizes the need to strengthen data-based verification systems to minimize
opportunities for document forgery within modern migration systems.