Why does the Saudia Arabia Consulate in the United States (US) require US certification of Power of Attorney document if they are member of HCCH?
Documents and Powers of Attorney
Notary Public The county clerk of the respective county where the notary public is commissioned; the county clerk is normally stationed in the court of the specific county where the notary public is commissioned by the U.S. Department of State.
Documents must be certified under the seal of the local branch of the State Department. Documents must be authenticated by the State Department Authentication Division. Fee: Payment must be made, either through mofa.gov.sa, or one of the authorized offices. Documents must be sent to the Consular Section of the Embassy of the Kingdom of Saudi Arabia to the United States of America. https://www.saudiembassy.net/document-certification
CONVENTION ABOLISHING THE REQUIREMENT OF LEGALISATION FOR FOREIGN PUBLIC DOCUMENTS (HCCH)
The present Convention shall apply to public documents which have been executed in the territory of one Contracting State and which have to be produced in the territory of another Contracting State.
For the purposes of the present Convention, the following are deemed to be public documents:
a) documents emanating from an authority or an official connected with the courts or tribunals of the State, including those emanating from a public prosecutor, a clerk of a court or a process-server ("huissier de justice"); b) administrative documents; c) notarial acts; d) official certificates which are placed on documents signed by persons in their private capacity, such as official certificates recording the registration of a document or the fact that it was in existence on a certain date and official and notarial authentications of signatures.
However, the present Convention shall not apply:
a) to documents executed by diplomatic or consular agents; b) to administrative documents dealing directly with commercial or customs operations.
"The Commission nonetheless wanted to avoid the exclusion, once accepted, being given too general a meaning. The qualifier "administrative" shows that commercial documents such as contracts and powers of attorney are subject to the rules of the Convention. "https://www.hcch.net/en/publications-and-studies/details4/?pid=52
I found the same policy for Egypt even though they are also member of HCCH,