The subtitle doesn't fit with this book at all. The book doesn't say much about what happened with either president. What Chaffetz talked about is how the federal bureaucracy is dysfunctional, and works to protect itself, and benefit its friends. That is the Deep State, an entity unto itself, trying to enforce its own policies, through intelligence gathering, disinformation/distraction, and controlling access to official information. In essence, they not only jerk us around, but politicians, as well. Reading his account, it gets you kind of wondering who's really in charge, and what that means for our democratic processes.
At first, it was looking like the book was going to be even less about the Deep State, and more like a book about, "The scandals I had to deal with," which, if you paid attention to the news during the first half of the 2010s, you've already heard about. However, if you give him time, Chaffetz gets into details about the scandals that you haven't heard in the news, and they're interesting.
The main point is documenting what he learned about how the Deep State operates. It's not a complete description, since it's only about what he experienced, but it's a good place to start in understanding that something nefarious is going on. What he gets at is that these goings on are not about serving the American people. They're about serving the bureaucracy's interests, and that of its friends.
What was refreshing (which oddly inspired some hope) was he made it clear that, to some extent, this is nothing new. What he described as the Deep State has been a feature of our federal government since at least the 19th century. He gives a few stories that illustrate this. It got me thinking that, "It was around then, and our country made it through that."
In the last chapter, he put forward a bunch of proposals to reform bureaucratic structure, to get rid of the perverse incentives that drive what he described.
He's given some credit where it's due, that in some cases, some people high up in the bureaucracy have supported such measures, because they see this behavior as wrong, as well, but the measures still haven't been passed (at least as of 2017, when the book was written). He mentioned a few cases where some helpful reforms have already been made, but he stresses much more needs to be done.
Given the institutional resistance, I felt like these recommendations were easier said than done. He closed with a few easy-to-follow criteria for selecting representatives to elect to Congress re. these issues, to hopefully get the ball rolling.