“Can a Pope be excommunicated? If so, by whom or what body of deliberation?”
That is a good question. I do not know the answer. Pope Francis is clearly not a man of God or a Catholic. He should be replaced.
Never in my life as a Catholic did I expect to ponder such a question. Back in Catholic School, no one would have dared to even ask it out loud. It would seem blasphemous. This is back when we were taught to believe that the Pope was infallible.
He is automatically excommunicated if he obstinately persists in heresy.
The College of Cardinals has, theoretically, the power to depose him.
Nothing is going to be done, because he is 79 years old.