Why is it that it seems like so many Jewish Conservatives are anti-Trump?
Most Jewish Conservatives are broadly part of the Neo-Conservative movement founded by Irving Kristol and promoted people like his son Bill Kristol, editor of the Weekly Standard, and Max Boot. (There are also some well known non-Jewish NeoCons, like Condi Rice, but still the movement has always been dominated by Jewish intellectuals.)
Trump has forcefully denounced the NeoCons, starting with his humiliation of Jeb, continuing with his comments on Iraq and on to his views on international relations in general.
Also Trump has been embraced by the Alt-Right, which has an antisemitic component, and as one of it's founding principles insists on discussing forbidden topics, one of which is the role of Jewish power in our society. You see this broadly on their sites from the over-the-top Nazi clowns to intellectual efforts to understand Jewish power, such as the writings of Kevin MacDonald. This is the stuff Hillary was trying to tie around Trump's neck last night, but it really doesn't fit.
Trump's lived in the epicenter of Jewish power in the USA and successfully developed buildings and projects there for years. I don't believe that would have been possible if he were antisemitic. IN addition his daughter married a Jewish man and converted to Judaism, again not something you'd expect were he a real antisemitic person.
Finally, it's worth noting that while the NeoCons might not like Trump, he got a pretty warm reception at AIPAC earlier this year.
The movement away from Obama in 2012 by Jewish voters was pronounced. It will be interesting to see how these various factors play out in 2016, and if Trump can maintain or improve on Romney's performance among Jewish voters.
In my opinion, Trump is the most passive Republican supporter of Israel since Dwight Eisenhower in the 1950s.
I don't sense any anti-Semitism from Trump.
Instead, I think Trump is borderline Libertarian on USA military issues that do not directly involve the defense of the American homeland.
In other words, Trump does not want the USA to be the world's policeman.
Personally, I do believe the USA needs to be the world's policeman, especially for small, pro-American nations like Israel.
On the other hand, after spending more than $1 trillion and losing thousands of USA soldiers in the Middle East over the last 16 years, I certainly understand why millions of American voters say “No More!”