I hope the investigation is not over.
I hope so, too. But power corrupts. Even with as much respect as I have for Sen. Rubio, you can't really trust the powerful to police themselves. I'm not sure what it is, but someone in government willing to throw themselves on their sword so the truth comes out will be very hard to find.
Policing the powerful was supposed to be the job of the press. We'll see how that goes.
I don't mean to be a downer, but it's hard to be optimistic any more.