It may bother you but what is the crime?
I doubt that the FBI or anyone else in government is going to investigate anything beyond Foley unless its determined that Foley's large campaign contribution to the Republican Congressional Campaign Organization was a bribe. Other than that, the FBI may want to verify the IM's and emails since they might be used against Foley if determined to be a crime. But you are deluded if you think the Feds are going to uncover a conspiracy of who put this information out into the public.
The crime would be knowingly withholding evidence of criminal behavior. I'm sure the FBI investigation won't impact this election but I would take satisfaction in seeing some scumbags go to jail.