It's not like the Israelis haven't done this before and not paid any consequences for it. 2000: https://www.wrmea.org/000-june/despite-coverup-israel-caught... 2015 caught greasing politicians: https://www.wsj.com/articles/u-s-spy-net-on-israel-snares-co... 2011: https://www.nytimes.com/2011/09/08/us/08spy.html 2015: https://theintercept.com/2015/03/25/netanyahus-spying-denial... 2014: https://www.newsweek.com/israel…
Without support from the USA, it would not be possible for Israel to defend itself. Much of their spying on the USA is not to harm the USA, but to ensure the USA is still on their side. I don't think they want to hurt the USA, but I do think they would support an opponent of a politician that had been "heard" expressing a lack of interest in financial and military support for Israel.
Probably this. And they likely act with their friendly party in the know. "Feel free to keep an eye on your wife using my car when I'm away. But if she or anyone else catches you, I won't know who you are and will report a stolen car".