Pope Francis will address a joint session of Congress today. Tens of thousands of people began gathering early this morning on the front lawn of the Capitol to watch the pope's speech on Jumbotron screens and maybe catch a glimpse of Francis. He is expected to wave from a balcony a few hundred yards away.WBFO's Jay Moran spoke with Father John Mack, faculty member with Christ the King Seminary in East Aurora, about his impressions of Pope Francis' visit.