day here in washington is continuing this hour. right now he's celebrating mass for 35,000 of the faithful. this is right outside the largest catholic church in the u.s. but even it isn't big enough to hold everyone who has come to see and to pray with him. this is the first mass that the pope has celebrated in the u.s. and the church's first canonization on u.s. soil. the choice of a hispanic saint is seen as a nod to the pope's views on immigration. and i want to start by bringing in jim schutto. he's been following the proceedings throughout the entire day. tell us what we are seeing now, jim. >> well, this is one of the most elaborate masses you'll ever see. it's going to go on for two hours and it starts with a special moment of the first canonization to take place on u.s. soil. there have been other american saints. for instance, it was interesting that the gift that the president gave the pope today included a key from elizabeth anne seaton who was the first, i believe the first american saint.