First Lady Michelle Obama, accompanied by President Barack Obama, greets Pope Francis upon his arrival at Andrews Air Force Base, MD, Tuesday, Sept. 22, 2015. On Wednesday, Sept. 23, he went to the White House for a morning ceremony on the South Lawn, to which some 15,000 people were invited. He also met with President Barack Obama, rode in a parade on the National Mall and prayed with several hundred bishops at St. Matthew’s Cathedral. About 30,000 people were expected at a late afternoon mass with Francis at the Basilica of the National Shrine of the Immaculate Conception. On Thursday, Sept. 24, the Pope Francis is addressing Congress and visiting with Catholic Charities before he leaves for New York and Philadelphia.