What has Israel done for U.S. and what beneficial role do they play in the M.E.?

I keep scratching my nuts trying to figure this out. They have no oil, they are a significant burden on our national economy amounting to 1 Trillion USD since the 1970's, our major oil suppliers i.e. Saudi Arabia, Kuwait, and othe GCC countries have no relations with them so...why do we have such unwavering support for these people?