On his Canon Law Blog, Dr. Ed Peters gives us the usual, overly complicated look at why Canon law doesn’t clearly excommunicate persons whom it seems to excommunicate because it’s all so complicated. But as Peters has pointed out, the Church has had a code of Canon Law for only less than 5% of Her history. What he fails to realize is that, with or without Canon law, certain sins automatically excommunicate under the eternal moral law: apostasy, formal heresy, formal schism.
Peters himself has taught heresy, as previously explained, on contraception, dissolution of a non-consummated marriage, and the direct and immediate authority of the Pope to teach non-infallibly. That last heresy is unique to Peters. He invented it by teaching from his ignorance, rather than from his knowledge. Peters knows that the latter position asserted by him is contrary to the teachings of three Ecumenical Councils, as one of his peers at SHMS pointed it out to him.
Dr. Robert Fastiggi: “Some of Dr. Peters’ comments about the ordinary papal magisterium need clarification because they could be interpreted as challenging the universal ordinary teaching authority of the Roman Pontiff, which is affirmed by three ecumenical councils: Florence (D-H, 1307); Vatican I (D-H, 3064), and Vatican II (Lumen Gentium, 22 and 25).”
That’s a nice scholarly way of saying that Peters’ claims are contrary to dogma, which implies they are at least material heresy. And since he declines to correct his publicly asserted heresy after many days, it is apparently formal heresy, which carries the penalty of automatic excommunication under the eternal moral law and Canon law. If Canon law is for some reason unclear, well, the moral law is not.