Those arms you are talking about have already been appropriated by Congress, UNTIL 2028!!!
But I'm guessing that you didn't know that because it's a lot easier to sit on social media and wax eloquent about how foreign policy should mirror morality.
Even if we could stop the arms shit, it wouldn't matter. Israel has it's own military industrial complex and there are several other countries that would happily trade with Israel to give the US influence over the region a black eye.
Do you understand? Israel does not NEED our stuff. Sure it helps, but you seem to be under the delusion that if we didn't supply weapons they wouldn't have any. That is woefully naive and incorrect.
"But why do we give it???"
To which I repeat:
Foreign policy is about power and power coupons, not morality. This is the way it is, not the way it should be. Kissinger was a soulless ghoul, but he understood exactly what foreign policy is all about (which is the main reason why most of us hated him with a fiery passion). Nixon should have ensured that he took a long stroll on the deck of a submerged submarine, but alas, missed opportunities.
Maybe one day foreign policy will resemble morality, but that day will not come for a very, very, long time. If ever.