the homeless people before physically resolvinga prio t th. >> we'll keep you updated, piers. matt, thanks very much indeed. we will kewe all know the presin is an old man, but how much time does he have left? this may sound an indelicate question, but the media is now openly speculating about the president's life expectancy . is it a fair and valid question? but possibly he's running for reelectionspecul through 2028.ee but will he make it another six years? dr. marc siegel is a fox medical contributor and joins me now. >> dr. siegel,contribu i think my overview about this issue of joe biden and his age is i know lotssieg of people who are a lot older than joe biden, who still aren whoe in complete control of their mental and physical faculties. i don't thin mek it's about the fact that he's 80. it's about the fact that is he seems to be degenerating in a way that i've seen much older people not degenerating. >> piers, i agree with you. and i've always separated that oud i't to i don't think it's an issue of age, although i'll get to that in a minute. i think it's a question of cognitive fitness and fitness in general.