I think you got that backwards. Although it's true that if not for the US-there would be no Israel.
At Israel's founding, the U.S. was neutral, with an arms embargo on both sides. The truth is that in its 1948 War of Independence, Israel's main source of arms, after domestic production, was Stalinist Russia via Czechoslovakia. Stalin apparently figured that, Jews being liberal socialists types, he could make Israel into a Communist puppet. Within a few months, about the time Israel won its War of Independence, Stalin saw that the Jews weren't going along his plan, and Israel became pro-Western.