Sadly, almost none of them.
There is a strong chance that Israel will soon be no more and the blame is on Obama and every voter who voted for him.
Possibly true, but, don't worry; they'll find a way to rationalize the blame back to "Bush's Fault".
Many urban American Jews care more about being part of the IN crowd than what happens to Israel. One of their main concerns is that their liberal friends don't get the idea they might be conservative or right leaning.
Yes, I know many of them, and I have known many more. We might think of them as JINOs. "Progressive" social politics is their true religion. Think of Mayor Bloomberg and George Soros.
Many "progressive" American Jews would rather see Israel disappear than get caught voting for anyone other than the most liberal democrats. The older generation are still voting for FDR at every election - different thought process but same results.
On the other hand, there are many fine Jewish people in the USA who are staunch patriots, supporters of the constitution and backers of Israel.
Sadly, they are in the minority.