Personal ordinariate
If membership by reception of the sacraments of initiation within an ordinariate is open not only to the Catholics mentioned in the 2013 amendment but to others also who have no Anglican background - something on which no express statement has been issued - anyone who has not yet received all three sacraments of initiation may join. This includes non-Christians, those who, in the view of the Catholic Church, do not have valid baptism (such as Mormons), and those who, again in the view of the Catholic Church, have valid baptism but not valid confirmation or Eucharist. Protestants in general are seen as lacking valid confirmation, but the Eastern churches and some Western ones, such as some Old Catholic churches and the Polish National Catholic Church, are recognized as having valid sacraments.
Hierarchy of the Catholic Church
The passage from membership of the laity to that of the clergy occurs with ordination to the diaconate. Previously, the Latin Church rule was that one became a cleric on receiving clerical tonsure, which was followed by minor orders and by the subdiaconate, which was reckoned as one of the major orders. By his motu proprio "Ministeria quaedam" of 15 August 1972, Pope Paul VI decreed: "The orders hitherto called minor are henceforth to be spoken of as 'ministries'." The same motu proprio also decreed that the Latin Church would no longer have the major order of subdiaconate, but it permitted any episcopal conference that so desired to apply the term "subdeacon" to those who hold the ministry (formerly called the minor order) of "acolyte". Even in those societies within the Latin Church that, with the approval of the Holy See, continue to administer the rites of tonsure, minor orders and subdiaconate, those who receive those rites remain lay people, becoming clerics only on being ordained as deacons.