The Jewish composition in the student body many ivy league colleges is quite high compared to their population overall in the US. Unfortunately many of them possess anti-Israel/US ideologies themselves to their own detriment and to Israel their only santuary in the world if the US (God forbid) becomes an anti-Jewish nation. Look at the names of many of the white leftist/anti US/Israel professors. Many of them are of Jewish descent. I do see one hope. Many American Jewish students are from liberal families, and they expected anti-Sematics would be white rightwing Christians. On the campuses they see anti-Sematism being expoused by black liberal professors and being silently supported by white liberal professors. To their surprise they see white Conservative Christian students protest the anti-Sematic remarks.
If the US ever became anti-Jewish enough that Jews would fear for their safety, consider that without US support Israel would fold within a short time thereafter.
In other words, if the US ever became unsafe, then noplace is safe, which is why AIPAC spends so much attention on the state of the US political scene