In my mind, Bush is almost gone. But of course he still has heaps of time, plenty of opportunity to do enormous, terrible things.
If I was a White House advisor looking to shore up the Bush legacy, I might suggest that the president steal an idea from Bob Barker and push for a national program to spay and neuter pets.
Of course the way this would play out would be that the administration would outsource the job to private contractors who would end up staging public drownings of baby animals.