Cardinal Donald Wuerl (C), archbishop of Washington, speaks during his tour of the site of next Wednesday’s papal Mass to view the construction underway at the Basilica of the National Shrine of the Immaculate Conception in Washington September 17, 2015. Flanking Wuerl are Catholic University President John Garvey (L) and rector of the shrine Monsignor Walter Rossi. REUTERS/Kevin Lamarque