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

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.

As Pope Francis continues to battle double pneumonia in hospital, his poor health is casting a spotlight on the arcane process of how the Catholic Church elects its leader. The papal "conclave" is intentionally shrouded in mystery — the term itself is Latin for "locked room" — but here are some of its rules and wrinkles: Candidates must be male and a baptized Catholic.

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

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.

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.

ROME (AP) — Pope Francis woke up and was continuing his therapies Monday after a quiet night, on the 10th day of his hospitalization for a complex lung infection that has provoked the early stages of kidney insufficiency, the Vatican said.

Pope Francis remains hospitalized in Rome as doctors treat a worsening respiratory infection that the Vatican has described as a "complex clinical picture." The 88-year-old pontiff was admitted to Gemelli Hospital on Friday following a weeklong struggle with bronchitis that required additional medical intervention.