for a visiting leader. tomorrow, pope francis will visit the white house, andf that, he is going to meet with american bishops at st. matthews cathedral and then it is off for the outdoor mass where he is going to canonize a saint, and another first. there are american saints, but none have been canonized here. on thursday, the pope will be the first pope to address a joint meeting of the united states congress. after that, he will meet with the cities homeless. so from one extreme to another. and then he is off to new york for a visit that coincides with the annual kon fab of the u.n. general assembly, and 170 world leaders will be on hand in town at the very same time that the pope will be. imagine the security.