I never asked for a book. This guy is making rhetorical questions equating donation to bribe. Sounds sophist to me and definitely deserving a challenge.
Apologies, I thought it was established that some donations are highly likely bribes [0]. If you're questioning that basis I certainly don't have the interest to debate that with you. Assuming you agree on this premise, then I certainly am equating these types of donations to bribes.
[0]: https://www.propublica.org/article/the-story-behind-jared-ku...