Boston's Cardinal Sean O'Malley, the closest American prelate to Pope Francis, took nine other bishops to the Mexican-American border for three days of listening to the stories of people who are suffering from America's horribly broken immigration system. The bishops celebrated a dramatic mass with hundreds of Mexicans, taking communion through slats in the security fence, and laid a wreath at the border commemorating the estimated 6,000 people who have died trying to cross.

"We can no longer tolerate the suffering caused by a broken system," the cardinal said. "The suffering and death must end."