So why are the majority of American Jews so steenkin' liberal?
Think Babs Streisand.
Why do they do this?
Because their "Religion" of Liberalism is much more important to them than their Jewish religion. It's that simple, and that sad ...
There is one exception in mainstream Libs in the public eye -- Alan Dershowitz, a talking head, liberal lawyer constantly in the media. He is very liberal on everything, except ... he does support Israel's right to exist and defend itself. What a concept (foreign to the rest of the lefties)!