“The heretical absurdity of the opinion that anyone or any power on earth can judge the pope, even for heresy, is made manifest by the consideration that the pope, in virtue of his primacy and infallibility, possesses the supreme jurisdiction and the infallible power to judge all questions of faith and morals – even his own propositions. Hence, the proposition that a council can judge a pope’s doctrine and declare it heretical; and from that premise, that the council could then judge the pope personally guilty of the crime of heresy directly opposes the dogma of pope’s universal primacy of jurisdiction defined in Pastor Æternus.”
Kramer, Paul. To Deceive the Elect: The Catholic Doctrine on the Question of a Heretical Pope (Kindle Locations 2954-2958). Kindle Edition.