“As for Minor, it did not rule on ANYTHING other than what was relevant to that case...and it clearly stated there was no question that a person born here of two parents is an NBC - as to any other definitions IT REFUSED TO DISCUSS BECAUSE IT WAS NOT RELEVANT.”
IMO, the Minor Court did not “reach” the question of whether the child of a legally single mom was NBC because Mrs. Minor was the legal child of two US citizens and was not the child of legally alien or foreign parents. Nor did the Minor court “reach” the NBC status of foundlings who were not presumed to be the child of aliens or foreigners, IIRC, but presumed to be citizens.
Even if they had given an explicit definition of NBC as the ONE AND ONLY definition - it still would have not been relevant to the case and could have been stripped away as dictum.