UCLA won't sign onto pledge combatting campus "anti-Semitism". I put the quotes around anti-Semitism because it seems to be used in a way that includes opposing foreign policies that are favorable to Israel. If that's the case, then I would probably agree with UCLA's hesitancy. In and of itself, expressing opposition to certain foreign policies that are favorable to Israel is no more anti-Semitic than opposing MFN trading staus for China is anti-Chinese. The characterization can change, of course, depending upon the underlying motivation for the opposition.