Are you sure you haven't got that the wrong way around? As an outsider it looks to me as if Israel shouts 'jump' and the USA says 'how high?'. Which is bizarre when you look at how much support the US gives Israel.

But most US politicians are dependent on Israel-aligned donors, so the US isn't going to say they can't attack. They'll do what they need to in order to keep the money flowing in so they can get re-elected.