Before 1949 there was no Australian citizenship. Legal nationality was British subject status. “Australian” was a description, a geography, a culture. It was not a statutory category with its own criteria of birth, descent or grant. The original compact operated against that background. The residual limits the people were understood to retain were not defined by a later Citizenship Act. They were the residual authority that successive statutes, treaties and administrative practices were understood not to exhaust. The Nationality and Citizenship Act 1948 created the modern legal status. It did not re-authorise the residual limits. It supplied a new positive-law form. The institutions now administer that form. The residual claim holds that the earlier residual authority did not travel with it. The criteria the state uses today for who is Australian did not exist around the First World War. National sentiment intensified. The statutory citizenship regime did not. The gap is the residual claim: the limits the original compact retained, and the later legal forms that continued without carrying those limits forward. The institutions treat the 1949 status as sufficient. The residual claim treats it as subsequent. Both can be stated. Only one is administered. The grant was never given, it was taken. Your not Australian unless you understand this.