The Israeli military and security forces budget is more than $55bn a year, and you are saying the US pays all of it. It’s the first time I’ve ever encountered such an outlandish claim.
Without US tax dollars, Israeli part of military budget would have to shrink by 50 - 60% to pay for R&D, manufacturing, testing, deploying and maintaining of US provided advanced weapon systems.
CIA & Mossad in that order, and of course, MI6 as well, but their budget is small