Cover-up Complete?

Its doesn't have to. There are other things that can be done, but they probably won't

Consortiumnews.com:

President George W. Bush’s decision to spare former White House aide I. Lewis “Scooter” Libby from jail marks the final act of a crime and cover-up that began four years ago when Bush, Vice President Dick Cheney and other top officials launched a campaign to discredit a critic of the Iraq War."