Pope Francis was wrapping up his trip to Mexico on Wednesday with a politically charged visit to the U.S. border for a huge open-air Mass as he focused on problems of violence and migration, a hot issue for the U.S. presidential campaign.
He also scheduled a visit to a major prison just days after a riot in another lockup killed 49 inmates. And he was to meet with Mexican workers, grassroots groups and employers in an encounter at which he was likely to repeat his mantra . . .