There are American Jews who vote on the basis of their support for Israel, and there are those who do not.
Since they are Americans, I would prefer that they vote on the basis of what is right for America versus what is right for Israel.
Having said this, I am of the opinion that, in general, what is right for Israel is right for America, and I thinks this is pretty clear.
However, if an American Jew truly believes that America should not support Israel, because of American interests, I totally respect them.
On the other hand, if an American Jew feels he or she needs to establish liberal bonafides by criticizing Israel...I have my doubts.
I'm not a Jew, but it seems to me that the default position for all Jews should be support of Israel. Not blind support, but the sort of support that gives Israel the benefit of the doubt.
We may need to debate what a "Jew" is, but it seems to me that if one self identifies as a "Jew," one should feel compelled to give Israel the benefit of the doubt.
If one considers oneself a "Jew," but is inclined to assume Israel is at fault and that Palestinians deserve the benefit of the doubt (i.e. The Hamas pledge to destroy Israel is merely a political chip) than I would suggest one needs to primarily self identify as a leftist rather than a Jew.
Self identify as you want, but don't expect me to give you credence because you claim to be a Jew.
(This reply is not directed at anyone in particular, so please spare me straw man arguments)
It's ironic that American Leftists feels that Black Americans are justified in considering themselves black over American, but that their opinion changes in the case of American Jews.
The really significant question ( and I probably should start a thread on it) is why American Liberals have such a hard on for Israel, when, irrespective of their faults, they are clearly a superior nation to any considered "Muslim?"