A senior Trump official, Under Secretary of War for Policy Elbridge Colby, lectured Pope Leo XIV's ambassador, Cardinal Christophe Pierre, on American military supremacy during a closed-door meeting at the Pentagon. The meeting allegedly involved a threat referencing the Avignon Papacy, a period when the French Crown used military force to control the Catholic Church. The Vatican has since shelved plans for Pope Leo XIV to visit the United States. The incident has sparked concerns about the relationship between the US government and the Catholic Church.