They'll just send aid discreetly instead, Israel is the US government as far as control of the US government is concerned and they aren't gonna give up their American cannon fodder and weapons that easy
It's not just that, many years ago an Israeli friend explained to me, when I was puzzled that images of the IDF could have been of the US Army because most of their equipment was US-made, that the US sent monetary aid to Israel which was then immediately returned to the US in the form of arms purchases. So the "aid" was really a US taxpayer-funded subsidy for US arms manufacturers, just without giving them the money directly. If you're a politician in a state with a huge BAE Systems manufacturing plant in it, are you going to vote to cut off the billion-dollar handout they're getting?