It is highly unlikely for the person named on the birth certificate to be construed to be an enemy or a stranger as contrasted to the person that is the holder thereof (see driver license or state ID)--they are not the same person. Any entity that is chartered by a State is going to be seen as 'friendly'. If a guy can get off a boat and get a driver license: whats the difference between his driver license and anyone else's? Nothing! How can you tell friend vs foe based on driver license? You can't? Perhaps its up to the person holding the certificate to act like an enemy or not based on what he does with what he has?
This topic as pertains to war perhaps cannot be adequately comprehended without the notion of mixed war.
How much difficulty is there in seeing that John Henry Doe and John H. Doe aren't the same name?The first and most necessary divisions of war are into one kind called private, another public, and another mixed. Now public war is carried on by the person holding the sovereign power. Private war is that which is carried on by private persons without authority from the state. A mixed war is that which is carried on, on one side by public authority, and on the other by private persons. But private war, from its greater antiquity, is the first subject for inquiry. -Grotius