President Trump speaks to reporters before boarding Air Force One on Sunday, while taking jabs at Obama and Biden for giving away Crimea over 10 years ago.

By the time Francis took over as leader of the Catholic Church in 2013, meetings between the president and the pontiff had become commonplace. During the dozen years that he served as the pontiff, Francis, who died April 21, met each of the three men who served as the U.S. president during his papacy.