[EDIT] Oh damn, when did Jordan rocket up the list of US aid recipients? I gotta start keeping up with geopolitical shenanigans again, I'm clearly behind the times. But yes, the Egypt thing was, if not publicly the case, one of those open-secret things that're taken for granted in poli-sci and policy circles, like "Israel has nukes", or "the US removing MRBMs from Turkey was part of the deal for keeping Soviet nukes out of Cuba". The US pays Egypt not to mess with Israel.
The US did not support Israel past the original vote, rather it tried to push a series of measures that would have been detrimental to Israel. At the time Israel was far more reliant on the USSR.
Anyway, the US policy at the time was determined by the State Department which was very anti-Israel for various reasons. Truman overrode them for the US vote, but was too busy with other affairs to set policy afterwards.
Trump moved the US embassy to Jersusalem, and the US gives billions of aid to Israel. What is your criteria for "antisemitism"? If accepting the capital of Israel, giving money, military aid, is your definition of antisemetic it dimimishes Nazis activity if you group aid into "bullying" and "antisemitism".
I don't think that accurately describes US policy anymore, if it ever did. Modern day US administrations have withdrawn from the world, and that means their ME policies are not determined by reality, but by domestic ideologies and domestic political considerations.
The kind of lobbyists in Washington are not rooting for the secular state of Israel, but pretty much specifically for the orthodox Haradrim, or the kind of Neftali Bennet.
Equally so, Israelis hating Arabs don't preclude them propping up the criminal Saudi state, and a small portion of Saudi elites who hate Turkey.