It's borne out by the number of times USA has vetoed a UN resolution against Israel, in the security council.Only by JohnD so that doesn't really constitute it as a 'fact' does it.
ie. A nutter said something, therefore, it must be so.
A history of the US blocking UN resolutions against Israel
Over the past five decades, the United States has vetoed at least 53 UN Security Council resolutions critical of Israel.
A history of the US blocking UN resolutions against Israel
Over the past five decades, the US has blocked at least 53 UN Security Council resolutions critical of Israel.
www.aljazeera.com
You can call historical fact as the word of a nutter if you like (and you did), but it doesn't make it so.