Lacker's resignation raises big question about the real Fed leaker

``... here are a few lingering questions on this incident, which occurred in 2012 but just will not go away. (1) Was this particular Medley incident the only important leak the FBI and other authorities found in their investigations? (2) Who was the source of the original nonpublic information Medley obtained before confirming it with Lacker? (3) Why did the Fed attempt to conduct its own internal investigation, which found no wrongdoing, before handing the matter over to criminal authorities, which apparently did?''