Where did you pick that up? The US voted for Israel and was the first country to recognize Israel when she declared her independance.
But that is where it ended.
Knowing full well that Israel was going to be attacked by Arab armies- with British help- the US slapped an arms embargo on Israel.
Americans were prosecuted for attempting to get WWII surplus to Israel.
Sorry Bro.
The United States voted against the establishment of a Jewish state in Palestine.
On the other hand, the USA was the very 1st country to recognize the new state of Israel.