CNN.com – A shifting probe? – Jan. 6, 2004 By JOHN F. DICKERSON; VIVECA NOVAK

If there are culprits in the White House who leaked the identity of CIA operative Valerie Plame, they may now be dependent on reporters to protect their identities. …

It’s still likely that no charges will be filed when the investigation winds down. Whatever the outcome, it will test the adage that, in politics, the cover-up is more damaging than the crime.