Pope Francis described Donald Trump's migrant deportations as a "major crisis" Tuesday, prompting a rebuke from the US president's border czar, who told the pontiff to "stick to the Catholic

While the Vatican has detailed laws and rituals to ensure the transfer of power when a pope dies or resigns, they do not apply if he is sick or even unconscious.

His age and prolonged illness have raised questions about whether he might resign, and revived interest about how papal power is exercised in the Holy See.

Pope Francis' age and prolonged illness have revived interest in how papal power is exercised in the Holy See, how it is transferred and under what circumstances.

Pope Francis’ hospital stay is raising obvious questions about what happens if he loses consciousness for a prolonged period, or whether he might follow in Pope Benedict XVI’s footsteps and resign if he becomes unable to lead.

While the Vatican has detailed laws and rituals to ensure the transfer of power when a pope dies or resigns, they do not apply if he is sick or even unconscious. And there are no specific norms outlining what happens to the leadership of the Catholic Church if a pope becomes totally incapacitated.

EWTN News editorial director and vice president Matthew Bunson joins 'Fox News Live' to discuss Pope Francis' battle with double pneumonia and his future as leader of the Catholic Church.

People across Latin America prayed for Pope Francis, the first leader of the Catholic Church to come from the region, as the Vatican reported on Saturday the Argentina-born pontiff was in critical condition in a Rome hospital.

Pope Francis’ overall clinical condition is “improving slightly” and his heart is working well as he battles pneumonia, the Vatican said Thursday, as some of his cardinals cheered him on and insisted that the Catholic Church was very much alive and well even in his absence.

Pope Francis, the 88-year-old head of the 1.4-billion-member Roman Catholic Church, is in hospital being treated for double pneumonia following a respiratory infection.

P ope Francis is in critical condition, the Associated Press reported Saturday, as the 88-year-old leader of the Catholic Church suffered a respiratory crisis following h