tonight an it is anticipation is building as pope francis begins the tour. the first stop washington d.c., the first pope to address congress but with the excitement, this is also skepticism. jim accost to is "outfront..." >> reporter: when pope francis arrives in washington for the first visit to the u.s., president obama will be welcoming a powerful political partner, but with the next presidential election heating up. the white house is rejecting the notion the trip is about politics. >> there is no plan or strategy put in place to try to stage an event to advance a political agenda. >> reporter: that's a tough claim to make considering the pope's position as the white house led the charge for same-sex marriage, pope francis softened on his stance on gay