There are other laws this could fall under. Not to mention that there could be indictments for related crimes like perjury, obstruction of justice, or conspiracy. I doubt Fitzgerald spent all this time and effort over something we found out after about five minutes of reviewing the laws. He's nowhere near that incompetent and thinking he is is frankly, ludicrous. Not to mention a great deal of the information they're looking at is classified info that none of us know. Don't go jumping the gun quite yet on this...
"There are other laws this could fall under."
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Such as?
The point is that if there is no crime, you don't run around investigating people -- can you imagine if any American citizen can be investigated willy-nilly, just to see if there is any crime they can pin on him, "just because"?