Pope Francis has been an outspoken critic of President Donald Trump since the primaries. The Pope suggested that Trump's campaign promise to build a wall on the border with Mexico was "not Christian," and that he should instead be building bridges. And of course, Trump responded at the time by calling Francis "disgraceful."
So you can probably imagine that things got kind of awkward when the two meet today. President Trump stopped by the Vatican on the way home from his tour of the Middle East, with the two discussing peace in the Middle East, and protection of Christians in the region. President Trump said that meeting with Pope Francis was the "honor of a lifetime."