This Is Confusing

Noted on Insty:

Only 29% of Americans are satisfied with the way things are going in the U.S. according to the Gallup poll conducted during the first week of June.

And yet the presidents approval rating is about 55%. I suppose everyone bought in to the "it's Bush's fault" line from 2008 but why has no one asked him why Bush seems to be able to have a greater influence over U.S. affairs than he does at this late date?