They can't. They know that they can win by just screaming anti-semite.
It's amazing to me that one could hurl an accusation like that, and have nothing at the ready to show why one holds such a opinion. Even if a person were to say, I have this sense that Buchanan's an anti-semite because of what I read between the lines of his ramblings, I could respect that. But to have nothing to post to prove such an accusation. In some circles that's called slander, in other's it's called a Sin. But I've had my fill of this conversation. I don't fancy such a useless trek.