President Donald Trump posted an AI-generated photo showing himself as the pope ahead of this week's gathering of cardinals to choose a new leader of the 1.4-billion-strong Catholic Church, and just days after he joked he would "like to be pope".

Over 12 years as pope, Francis tried to remake the U.S. Catholic hierarchy more in his image, elevating pastors who prioritized social justice and migration issues over culture warriors who were more favored by his more doctrinaire predecessors St. John Paul II and Benedict XVI. A new pope who is more conservative could reverse that effort.