Angelus,
My apologies, I had not noticed you had given the reference already in the thread.
However, I do not think one can, ordinarily, just dismiss the decrees of the Roman Congregations. They act with delegated authority of the Holy See. Only a relatively small amount of Church Law is promulgated directly by the Pope by Apostolic Constitutions, by motu proprio, Apostolic letter etc. If something is not directly issued by the Pope can it simply be ignored?
The changes to Holy Week were signed by the Cardinal Prefect of the SCR and its Secretary, not by Pius XII - are they not binding?
For the record if I were in orders I would not name St Joseph in the Canon.
Far from having the power to change the Canon of the Mass, the Congregation is supposed to make sure it is "diligently observed." No one, after Trent and
Quo Primum, could change the Canon of the Mass.
Catholic Encyclopediahttps://www.newadvent.org/cathen/03255c.htm
There were, however, additions made to the "Communicantes" so as to introduce special allusions on certain feasts; the two lists of saints, in the "Communicantes" and "Nobis quoque peccatoribus", were enlarged so as to include various local people, and even the "Hanc igitur" and the "Qui pridie" were modified on certain days. The Council of Trent (1545-63) restrained this tendency and ordered that "the holy Canon composed many centuries ago" should be kept pure and unchanged; it also condemned those who say that the "Canon of the Mass contains errors and should be abolished" (Sess. XXII., cap. iv. can. vi; Denzinger, 819, 830). Pope Pius V (1566-72) published an authentic edition of the Roman Missal in 1570, and accompanied it with a Bull forbidding anyone to either add, or in any way change any part of it.
Council of Trent Session VII
http://www.thecounciloftrent.com/ch7.htm
CANON XIII.-If any one saith, that the received and approved rites of the Catholic Church, wont to be used in the solemn administration of the sacraments, may be contemned, or without sin be omitted at pleasure by the ministers, or be changed, by every pastor of the churches, into other new ones; let him be anathema.
Council of Trent Session XXII
http://www.thecounciloftrent.com/ch22.htm
CHAPTER IV: On the Canon of the Mass. And whereas it beseemeth, that holy things be administered in a holy manner, and of all holy things this sacrifice is the most holy; to the end that it might be worthily and reverently offered and received, the Catholic Church instituted, many years ago, the sacred Canon, so pure from every error, that nothing is contained therein which does not in the highest degree savour of a certain holiness and piety, and raise up unto God the minds of those that offer. For it is composed, out of the very words of the Lord, the traditions of the apostles, and the pious institutions also of holy pontiffs.
CANON VI.--If any one saith, that the canon of the mass contains errors, and is therefore to be abrogated; let him be anathema.
1917 Canon LawCanon 253 (NA) Cross-Ref.: 1917 CIC 1999
§ 1. The Congregation for Sacred Rites has authority to see and establish all those things that
proximately involve the sacred rites and ceremonies of the Latin Church, but not which refer to
sacred rites in the wide sense, things like the right of precedence and others of this sort, which are
treated either in the judicial order or in the disciplinary line.
§ 2. It is for
it especially to be vigilant that the sacred rites and ceremonies are diligentlyobserved in celebrating the Sacred [Synax], in the administration of Sacraments, in conducting
divine offices, and in all those things that respect cult in the Latin Church; [it can] grant opportune
dispensations; it can give out insignia and privileges of honor whether personal or for a time,
whether to places or perpetually,
in matters affecting sacred rites and ceremonies, and shall takecare lest these fall into abuse.§ 3. Finally all those things that pertain to the beatification and canonization of the Servants of
God or to sacred relics in any way are referred to it.