ANSWER TO THE FOURTH OBJECTION: First, let's note that the 1917 Code of Canon law does not speak about heretics or schismatics. It explicitly speaks about excommunicated people. This canon is obviously excluding heretics, schismatics and apostates since it’s the Divine Law that forbids them from receiving or consecrating a sacrament. But even if this canon were speaking about heretics and schismatics (which it isn't), it would still hold no weight against the infallible declarations made by the Catholic Church. The 1917 Code of Canon Law is also not infallible, as will be proved further down.
