[ crowd boos ] >> they ain't biography it. aarp is a nonpartisan organization. >> time and again this president has dubbcked the issues, put hi own job security over your retirement security. [ crowd boos ] >> of course he said he'd be willing to work with republicans but he has not moved an inch closer to common ground. [ crowd boos ] >> some convention-goers walked out of the ryan speech. it should be of little surprise that seniors in attendance weren't sold on ryan's rhetoric. >> i think they could see the shallowness in some of the arguments that mr. ryan had proposed. the people around me were booing and i think they get the feeling that these folks will say