Israel is an incubator for weapons systems, and generic contributions buy access. The US manufactures the ammunition for Iron Dome, and the DoD is generally keen on adding something like Iron Beam to the abilities of every branch of the service.
https://en.wikipedia.org/wiki/Israel_lobby_in_the_United_Sta...
For example AIPAC is pledging $100m to target in primaries progressive democrats who have not supported Israel recently. That is a hell of a lot of money: https://www.bostonherald.com/2023/11/17/powerful-pro-israel-...