The only thing that cutting US supplies to Israel is going to accomplish is increase in deaths of innocent Palestinians as Israel will be forced to use less precise munition ‾\_(ツ)_/‾
No, Israel will be forced to an actual peace settlement because those iron dome interceptors don't come cheap. It's only a matter of time before they run out, Hamas rockets actually start hitting Israel, and Israel actually legitimately comes to the negotiating table instead of trying to undermine and bomb its way to its objectives. Golan Heights will probably be returned to Syria, Lebanon will see some returned land, and we might see the 1967 borders in real life instead of just the history books.