ABC: Some California leaders will head to the Vatican next week to take part in a conversation about social justice and climate change, but how does the Bay Area fit into that discussion? ABC7 News looks for answers to that question. San Jose Mayor Sam Liccardo is traveling to Italy this weekend. He told ABC7 News, "When you have an opportunity to talk to colleagues representing big cities throughout the world, there's always a great opportunity for learning." He's just a handful of U.S. mayors invited...