But what does "all" mean there?
If you mean this one...
I wasn't quite sure what to make of it all
It means "the totality of it" - whatever Clinton was having trouble making sense of.
There are so many birds in the sky that I cannot count them all
. (=all of them)
There is so much in the newspapers about Iraq, that I do not have enough time to read it all
. (=all of it)