Essentially, though, ignoring conspiracy theories and set in stone agendas, Israel simple represented a palatable partner in an incredibly complex, hostile part of the world and there is simple more in common between the two countries, despite their own at times competing interests. But US interests align far more with Israel, or politically moderate countries like Jordan than some others in the region.
I'm sure there is an element of playing to your electoral base TODAY, but honestly, I think it's just pragmatism at the end of the day in a region where the math can be brutal and bloody, and there are no easy choices of solutions, and real partnerships are fleeting in the region since the powerbrokers in one country or region today maybe be out of the picture tomorrow. Despite internal politics in Israel looking like a bloodsport from outside, they are at least a consistent voice in a highly turbulent region.
That's just my relatively uninformed, I'm sure biased opinion, but I don't have a fixed opinion on who the good and bad people here are, and thing there's a lot of blame in every direction, and no real will to change that on any side.