roth. also, francisco sanchez. and later, a look at the implications of the aging of the u.s. population with richardon, with the center for strategic and economic studies. that is live on c-span. >> on television, on radio, and online, c-span, bringing public affairs to you. washington your way. >> vice president joe biden talked about the situation in pakistan and afghanistan and the u.s. plan to begin withdrawing troops this july. he also commented on the political rhetoric in the aftermath of the tucson shootings. his remarks came at a house democratic caucus retreat in cambridge, md.. this is about one hour. friends, colleagues, this is an opportunity to give us to talk, to welcome our newest colleagues, our nine members, but at the same time, get ready for the work ahead, and we are very fortunate that each and every time we have had this conference, we have the highest level participation by our highest leaders in the land, and we are very fortunate that once again, the vice president has taken the time to be with us, but i want to introduce to you someone who has had many opportunities to wor