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John Huber was appointed by Obama.
Toothless IG was appointed by Obama.
Sounds right.
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Why do you call Horowitz a "toothless" IG? Horowitz was stonewalled for years by AGs Holder and Lynch -- until Rep. Jason Chaffetz pushed through the Inspector General Empowerment Act of 2016 to codify Horowitz's authority to compel production of documents. H.R.6450 was introduced 12/7/16, passed by House 12/8/16, passed by Senate 12/10/16, signed by Obama and became law 12/16/16. That's when the dam of information broke, and IG Horowitz struck paydirt.
If by "toothless" you mean that IG Horowitz can only investigate but cannot indict, that was remedied by AG Sessions's assignment of a federal prosecutor to work with the OIG. That is "teeth."