The Hong Kong version of the National Security Law may be enforced by mainland authorities The bigger worry is that after the promulgation of the Hong Kong version of the National Security Law, in addition to the "certain degree" of law enforcement power discussed above, it is very likely that in all "illegal" situations, as long as the National Security Law is involved, " Neither the enforcers nor the judges of safeguarding national security in accordance with the law” are Hong Kong’s police, prosecution and court systems.
In this way, there will be two sets of ghost mannequin effect service law enforcement systems in Hong Kong, one is national security and the other is the Hong Kong police. Guoan handles the affairs of the Hong Kong version of the National Security Law, and is directly enforced by Guoan (or assigns Hong Kong police to enforce the law). The Hong Kong system, on the other hand, deals only with "other" national security matters under Article 23. It is not yet known whether such concerns are true.
But if the Hong Kong version of the National Security Law is a "national law", it is not impossible for it to be handled by a "national agency". In this situation, similar to the United States, there are federal police (for example, it is the responsibility of the federal police to deal with illegal immigrants), and there are also state police. National security may be analogous to the federal police, which is specially responsible for the enforcement of the Hong Kong version of the national security law.