Who must provide a certifying document for questions of fact concerning acts of state in Hong Kong?

The Chief Executive is responsible for providing a certifying document for questions of fact concerning acts of state in Hong Kong. This role is rooted in the unique constitutional framework set out by the Basic Law, which delineates the powers and functions of the Chief Executive. As the head of the Hong Kong Special Administrative Region (HKSAR), the Chief Executive functions as a key link between the central government and the HKSAR.

In matters that involve the determination of facts related to acts of state—such as national defense, foreign affairs, and other significant government functions—having an authorized representative to provide certification is essential for clarity and legal certainty. The Chief Executive's role in this context emphasizes the importance of unified representation and authority when dealing with issues that fall under the purview of state affairs.

Other entities mentioned, like the National People's Congress, Sovereign State officials, and the local court system, do play pivotal roles in Hong Kong's governance and legal system but do not specifically carry the direct responsibility for certifying documents in matters of state as assigned to the Chief Executive.