Which reminds me, as to legally registered lobbying of Congress ("it's all about the Benjamins"): Israel gives more to Dems, Saudis prefer GOP.

And Saudis seem to be spending much more recently than pro-Israel groups combined:

[....] Amid concerns that former president Barack Obama would be less supportive of Israel, donations by pro-Israel  political-action committees jumped in 2008, his first year in office.

In 2018, these groups (including AIPAC) spent about $5 million on direct lobbying efforts beyond campaign contributions; pro-Saudi groups, for a rough contrast, spent $19 million from the beginning of 2017 until October 2018 [....]

But mysteriously (or not, if one has theories about why this is), domestic political coverage rarely gets into Saudi lobbying, seems like it's always all about Israel.... I.E., this "conspiracy theory" didn't play very well for very long among liberal media and the blogosphere, even though Michael Moore promoted it.

Edit to add: I've always surmised that this phenomenon might have to do with "it's the hypocrisy stupid" thing.  Saudi Arabia makes no pretense of being a democracy, while Israel does. So the left gets more into bashing Israel, because their treatment of Palestinians is hypocritical.  Both are responsible for atrocities of different types and both use tribal fear of "the other" to manipulate their populaces. The thing is, if one is into self-centered Amero-centric foreign policy, Israel has done little to directly hurt Americans, while it could easily argued that Saudi Arabia has done things that hurt Americans. I've always suspected that this is the simple reason that Joe Lunchpail types are often supportive of pro-Israel policy: Israelis are seen as friends of Americans and most Arabs are not. (Not coincidentally, I think Michael Moore has always gotten this instinctively about working class types.)

Bazzi is a great reporter, I became a fan during the Iraq war, just found him again recently: