vatican, we are expecting this meeting between pope francis and us presidentjoe biden. i can hear a helicopter overhead. joe biden is set to arrive at the vatican, just behind me, in about ten, 15 minutes time. he is the second american catholic president of the us. this is his fourth meeting with pope francis. they have met three times before. they have strong chemistry. pope francis, joe biden said, was a source of great comfort, whenjoe biden lost his son. and joe biden accompanied pope francis during much of his tour to america in 2016. this is a meeting in which they will discuss points that are close to both of their hearts. climate change, migration, the way out of the pandemic. perhaps they will not broach a thorny issue at the moment facing conservative american catholics, which is that he