Vice President JD Vance will lead a U.S. delegation to attend the inaugural mass on Sunday of Pope Leo XIV, the first American pope, who had criticized President Donald Trump and Vance before taking leadership of the global Catholic Church.

Vice President JD Vance will attend the inaugural mass of Pope Leo XIV following the pontiff’s historic election as the first American leader of the Roman Catholic Church.

Here’s what we know so far about Pope Leo’s inauguration Mass. The inauguration Mass is due to take place on Sunday, May 18, at 10 a.m. local time at St. Peter’s Square.