If past popes have upheld Catholic Doctrine on divorce and receiving Holy Communion, how can a current Pope nullify their Declarations at all. The Popes are suppose to be infallible when speaking on Religious Matters? Can Pope Francis declare that all past Popes and their rulings are null and void? I think not, without creating a Schism in the present Catholic Church now?
My belief is that Francis is a public heretic, not Catholic and therefore can not possibly be the visible head of the Catholic Church, a true pope.
“...Can Pope Francis declare that all past Popes and their rulings are null and void?...”
See my final paragraph concerning JPII in my post #4 which is basically bringing up your same point.
Short answer - a Pope can’t! This Pope is teaching heresy and these Cardinals are calling him out on it!! Deo gratias.