They got $1 billion for the iron dome [1]
Regarding the Israel lobby, it is strong, but it's losing its grip:
25% of American Jews consider Israel to be an apartheid state [2]
Young evangelicals are increasingly turning away from Israel [3]
[1] https://www.haaretz.com/us-news/.premium-u-s-senate-approves...
[2] https://www.haaretz.com/us-news/a-quarter-of-u-s-jews-agree-...
[3] https://www.brookings.edu/blog/order-from-chaos/2021/05/26/a...