You think Americans are going to turn their back on Israel? Maybe the alt-left, but the rest believe they are the democracy worth assisting in the M.E. Furthermore, and this point really instigates an emotional triggering of the alt-left and socialists; Americans and Christians around the world feel a spiritual, theological connection with Israel.
What is most important here, is that Americans of Jewish decent are learning that the narrative the left has been using for decades was nothing more than a con job to push an unfair, global agenda on behalf of China (as opposed to a fair, capitalist approach), that eventually would destroy America AND Israel. It is not the Conservatives who are a problem for Israel, there are exponentially more who identify as right wing who support Israel, but in fact, the usual suspects, the closet commies and socialists who want nothing to do with Israel or the sanctity of religion.
As usual they project to the right, focusing mainly on Christians as somehow the enemy of Israel, White Supremists (how in the hell are they considered conservatives btw?), fake, small radical groups of clowns who call themselves Nazis (here's a hint, they don't exist anymore, they were defeated in 1945 if my memory serves correct). Dirty tricks, just as we see the same dirty tricks in politics against Conservative and Libertarian politicians. Though know the population is getting smarter. From the Hispanic to African-American citizen, people are starting to see through the B.S.
Just as I would help America and risk my life for your values if you went to war with a foreign power (over a decade ago I reached out to the U.S military to see if I could enlist as a Canadian), there are many Evangelicals all over the world who would risk their lives for Israel. That's a powerful emotional connection to the Holy Land that those outside the sphere don't understand. Even myself, an imperfect, Born Again of sorts am amazed at the commitment some have for Israel even as they haven't even visited there. I commend them, it's a principled stance based on a deep appreciation for the bible.
In conclusion, those of us who have recognized the lies of "Good Little Germans" and are not surprised by these results. We already know that neo-communists et al dislike capitalism and religious expression, they always seem to find a way in which to express it. Israelis are well informed, they know that America is their eternal ally, and thus, they won't allow some lying alt-left radicals to disrupt this relationship. Vice versa I'm sure.