Wait, were you thanking me for the clarification that I have yet to post?
Or did you self-clarify my post yourself and then call me an idiot because your clarification sucked? I'm going to assume that you weren't confessing to being the self-identifying idiot, but that's not clear either
Anyway, I'm saying that the FBI is not beyond reproach, and they enforce the law inconsistently and unfairly, and thus dishonestly. They have quite the sordid history, and often its not clear exactly who made the call or why. Of course, sometimes they get it right; this is the basis of their glorious stature in our society. But when they get it wrong, it's usually a fucking disaster, like with the supreme court...no more appeals.
In this case, you gotta be fucking kidding me if you think they got it right. Why won't they make a case? Are they so brilliant that they can accurately predict the case is so flawed that it would fail in court? Are they so cynical that they don't agree that it would be valuable to prosecute the case regardless of the outcome, in the interest of justice and/or accountability? Are they underfunded/understaffed and cannot mount a proper case due to an inadequate investigation? Would working this case threaten other cases, or (golly) national security somehow?
Give me a fucking break. I don't need to prove their motivations---or even fathom any guesses---to know when they are fucking up. This case is clear: the FBI has done a disservice to the American people here.
As far as your sarcastic "protect some random low level local government employee" theory...yeah, actually that is spot on. In another context, it's called the Blue Shield or whatever. Professional courtesy, from another point of view. The FBI is supposed to step in when the local authorities cannot be trusted to serve justice, which very much sounds like the case here. Is there pressure to keep the FBI from prosecuting local law enforcement due to apparent incompetence or corruption? Fuck yes, how naive could you be? That's like the nuclear option, and they use it about as often, for about the same reasons. I can only assume in this case, the FBI were like, "meh, we're busy, call us when you got a terrorist". Too bad, because lay people looking at this case are like "this is fucked up and represents everything wrong with government" and we are all losers as a result.