Pope Leo XIV, in one of his first personnel appointments, names Cardinal Baldassare Reina grand chancellor of the Pontifical Theological Institute John Paul II for Marriage and the Family, replacing Archbishop Vincenzo Paglia, who turned 80 on April 20.

During a special audience with religious leaders who came to Rome for the inauguration of his papal ministry, Pope Leo XIV vowed to continue working toward Christian unity and promoting dialogue among all religions.

The Vatican was already crowded with tourists and pilgrims on Saturday, but tens of thousands are expected on Sunday, and perhaps as many as 100,000 for Pope Leo's inaugural Mass, and Chicagoans have made the journey to Rome to represent their hometown pope.

The day after his inauguration Mass, Pope Leo XIV had a closed-door meeting with U.S. Vice President JD Vance at the Vatican.

Chicago Cardinal says when Pope Leo XIV is ready to travel to the United States, he will push for a Chicago stop.

Pope Leo's inauguration mass held on Sunday, May 19. After returning to Nigeria, Peter Obi shared why he did not personally meet the new Catholic Church head.

The service marks the official start of Leo's papacy just under a month after the death of his predecessor, Pope Francis. The ceremony began with a procession from St. Peter's Basilica — where Leo and other church leaders visited St. Peter's tomb to pray — to St. Peter's Square, where the Inauguration Mass was held.