I mean, top Republicans have already admitted this was a ploy to drop her poll numbers. Kind of your cue to let up on the issue and not take it so seriously.
First, you're thinking of the Benghazi investigation - not this. This is a lot worse, and that's saying something.
Second, Kevin McCarthy's quote was a bit misconstrued. He said:
"Everybody thought Hillary Clinton was unbeatable," McCarthy said to Sean Hannity. "But we put together a Benghazi special committee, a select committee. What are her numbers today? Her numbers are dropping."
That doesn't mean the investigation was designed purely to hurt Clinton - though I think it's pretty common sense to infer that that was at least
a reason. The point McCarthy was trying to make, as he later explained, was that there was merit to the investigation. If there hadn't been merit, it wouldn't have hurt her. Granted, that's a dubious suggestion, because phony attacks often cause all kinds of political damage, but it's also not an admission that the sole purpose of the investigation was to hurt Clinton. I'll grant you it was almost certainly
a purpose. But Americans died in that terrorist attack, including a US Ambassador. There was going to be an investigation no matter who was SOS.
Again though, this has nothing to do with Hillary's email shenanigans, which should by all rights land her in jail.
And no, that's not a partisan assumption - that's common sense based on what has been reported. It is a FACT that Clinton had numerous top secret emails on her non-sanctioned private server.