It surely doesn't. One reason as to why the US is supporting israel heavily, is because the said folk have a strong lobby in your government and financial apparatus.. Forign aid/donations are usually a sound capitalist state give and take mechanism, based on expectations of (some form of) return of the investment. Often the expected return is not of obvious economic value, but it always is the base motivation, whether the outcome can be precisely calculated in $$$ or not. israel is certainly not exempt from this rule. It may look as if the US is getting no or very little in return, but that is certainly not the case. For one they're a (de-) stabilizing factor in a volatile area of the world, where one of the major factors of the world economy is found abundantly: oil. Another reason is that a lot of covert shit can be done, using the "partner" as the excecutive organ, while being able to claim absolute innocence; ie: israel recently carried out a strike on a Iranian nuclear facility and officially the US had nothing to do with this. The biden administration is currently negotiating on the nuclear-pact that President Trump discarded (because it was shit and there's no way in Hell you can trust the Iranians on this) and it's relatively obvious that the strike was a coersion attempt to pressure the Iranians in the negotiations. Hammer and anvil combined into a Sword of Damocles..