1, T is unpredictable, so the best we can go is his previous record. It was pretty positive to Israel. Both in his direct dealings with Israel (Yerushalaim, Golan, Abrahamic accords) and indirect – Suleimani, ISIS. Could he do something different? sure. But with the other side, we have no idea.
Interesting opinion poll from a liberal group of non-Jewish students in the universities with significant Jewish presence – these are our future leaders, and probably similar to those already graduated: 1/3 showed negative attitudes towards Jews. Of these 1/3:
50% have negative attitudes towards Jews as people and are 50% progs, 30% moderate, 20% conservative. Given that most students are to the left, this seems like even distribution
50% have negative attitudes towards Israel, of which 90% are progressive …
So, no doubt, political pressure against Israel is currently from the left