Should be interesting. If Jeb does run and get the GOP nomination, he will pretty much have to have GWB at the GOP convention.
The GOP has jumped through hoops the last two conventions to keep GWB away so as not to remind people how horrid GOP presidencies are. But if Jeb, is their man in 2016, it would look just too weird to keep GWB away.
But maybe GWB can say "Sorry, but I will be busy painting my feet."
;-)