Pope Francis draws big crowds and high spirits in Washington

Aired: 9/23/2015 | 0:08:39 | Clip
Thousands turned out Wednesday to experience Pope Francis' visit to Washington. At the White House and at Mass held at the National Shrine of the Immaculate Conception, the pontiff addressed the urgency of global warming, respect for traditional marriage and the burden of sexual abuse within the church. William Brangham talks to Judy Woodruff about the controversial canonization of Junipero Serra.