I found this on another thread:
Originally Posted by GAssisi
Do they really have any good basis for considering Catholics heretics? I have not seen any.
Originally Posted by Fr. Ambrose
Alas, creating a de fide dogma (sorry for the tautology) that one bishop is personally infallible when teaching on matters of faith and morals is a heresy.
It seems to me that Fr. Ambrose is stating the Orthodox view of the papacy. What is the truth or untruth of the answer to the question?