Who has to put forward the wire fraud charge? FBI? or can a local TX attorney bring that charge and the discovery that would follow?
We know why the documents were sent to CBS.
But why and when were they also sent to USA Today?
The U.S. Attorney would be the logical person - the FBI works for him doing the investigation. The DOJ or Attorney General could also do it. This is for the federal crime, of course.
If a state crime of fraud, forgery, etc. has been committed, it would be investigated by the local police or state police, and charges brought either by the local state attorney or a grand jury.
To answer the other part, a civil action could be brought by a local attorney representing a private party who was damaged by the memo. Bush and Killian come to mind. Of course, CBS as well, but don't hold your breath.