of years. >> reporter: right. >> how much, gloria, might this slow him down, do we know? >> reporter: we don't know that it would slow him down. i would wager that it wouldn't knowing george w. bush and knowing how important physical activity is to him. what we've seen from bush is interesting, too. as you point out, he's laid low. lately he's been dipping his toe back in the political waters. we've seen him talk about the need for immigration reform. you know that he tried to do that during his administration. didn't work out so well. i think he'd like to see it done now. by the way, he's coming back up in popularity, you know. he's still not regarded as a very popular ex-president, but 5 in 10 see his presidency as a failure but it used to be 7 in 10. he's fond of saying he'll be long gone when the history books try to judge just what he did and how he did it.