The pope wrote a letter to young people, saying the church wants "to listen to your voice, your sensitivities and your faith, even your doubts and your criticism."

A confident pope sets a new example for governing the church. For Francis, tension is a sign of life.

Archbishop José Gomez of Los Angeles called the video “a beautiful message...and I think that is what we need right now, more hope for the future."

The group said it "is completely legitimate and authorized" to investigate the matter and inform the pope.

Migrants and refugees must be given a dignified welcome, the pope said in his New Year's message.