I do not think that this is true at all. A lot of interests converge in the US relationship with the Israeli state, but Judaism as a religion isn't the dominant partner. The US is full of antisemites, and the refusal of the US to take in refugees as WWII was brewing contributed to the intensity of the Holocaust, and the increase in Jewish support for the Zionist project.
You can easily become a pro-Israel politician if you are an antisemite who is taking money from a contractor (who is also antisemitic) who sells arms to Israel, and you're representing a state filled with evangelicals who believe that Israel will cause the second coming of Jesus Christ, who will either convert or condemn all of the Jews to eternal suffering.
Israel doesn't control anything, and the US doesn't intrinsically care about Israel (which is why it's constantly insecure in the relationship.) Wealthy people in the US use Israel for their own purposes, and Israel (largely Likudnik Israel) spends lots of time and effort to remain valuable to those people.
I think that a few old, terrible Jewish billionaires who think that their rabid support of Israel (through donating to US right-wingers) will get them into heaven despite their terrible personal and business ethics get an inordinate amount of attention, and end up characterizing all of Israeli lobbying for a lot of people.
This would happen whether or not these companies had any personal or ideological connection to Israel, but these relationships would tend to grow over time (between contractors and the Israeli government.)
edit: The US as a whole gets nothing but hassle and cognitive dissonance out of the relationship, but just like any war racket, people producing the material for that war get wealthy enough to get their politicians elected and perpetuate the process.