Remember also that while many Christians have been in the US for generations, many Jews have only been here for a generation or two.
I grew up in a household with both my mother and grandfather. We both learned of his early life from a very young age. While I wouldn't say he hated Christians, he certainly distrusted them (he made no distinction, but I believe that his anger would have been directed at Catholics and Russian Orthodox). He grew up in Western Poland, living through a number of pograms in his village. He managed to escape to Russia, making boots for the Czar's army, and learned to hate the Russians in general.
When you wonder why it seems that so many Jews don't like or trust Christians, remember that many of the wounds haven't had much time to heal.
Mark
Oops, that should have been Eastern Poland.
Mark
I find that Jews who came to America after 1945 are much more likely to vote Republican.