The program on Saturday in Chicago includes music, prayer, speeches and Pope Leo’s first public address to an American audience.

Pope Leo XIV is distantly related to a number of prominent figures, including Hillary Clinton and former Canadian Prime Minister Justin Trudeau, according to a genealogy investigation published by the New York Times.

"The commitment to building a safer world free from the nuclear threat must be pursued through respectful encounters and sincere dialogue," Leo said.

Pope Leo appealed on Saturday for authorities in Iran and Israel to act with "reason" after recent airstrikes and to pursue dialogue.

Harvard University Prof. Henry Louis Gates Jr. takes a deep dive into the pope's past in New York Times Magazine piece.

The forecast is sunny for Pope Leo's Chicago event on June 14. Meanwhile, Trump's military parade in D.C. is looking much wetter.

Pope Leo XIV has made waves with some of his fashion choices, returning to much of the traditional pomp of popes past.

Pope Leo XIV made his first appointment of a Chinese bishop under the Vatican's 2018 agreement with Beijing, signalling he is continuing one of Pope Francis' most controversial foreign policy decisions.