Well, that's true, but the buck has to stop somewhere. Personally I wonder if Shimkus might bear a good deal of the blame. He was the one who conducted the "investigation" which consisted of asking Foley if he did anything wrong.
It's hard to pin the blame without knowing how this sort of thing usually works, but I would say Shimkus gets the majority of the blame for not investigating more to protect the House pages he was responsible for, and separately Hastert and Reynolds get the majority of another type of blame for the electoral problems this ended up causing the Republican Party -- possibly losing Foley's seat plus hurting the party nationally.
Also from my perspective, I wanted Hastert and Reynolds gone for other reasons before the Foley incident so .... obviously I still want them gone.
"Well, that's true, but the buck has to stop somewhere."
How about just impeach Bush while we're playing along with Dem scandals? Maybe every Republican should resign over failing to report Foley a year ago. They had to have contact with him sometime in the last 2 years.