Opposing settlements has been US policy under every administration for the past 50 years. This was no different in spite of it being spun that way.
(Im not sayig I agree with the resolution, just that it isnt a change)
As for the position of the party, many Democrats in Congress urged Obama to veto it. I dont have to agree with every position taken by every Democrat (even if he is President) Im sure you didn’t agree with every position Bush took, presumably including his constant attack on Israeli settlements (unless of course you hold democrats and Republicans to a double standard).
It remains to be seen how Trump will be, he certainly talks the talk, but he has shown himself to be just that – talk, over his long career as a showman. I am cautiously optimistic that he will be different.
Further more, Trump is being hailed as a big hero since he said he would have vetoed this resolution. Obama DID veto a similar resolution in February 2011. Yet he was still widly vilified as the most anti Israel or even Anti-semetic President. Netanyahu thanked him by publicly embarrassing him and even campaigning for his opponent in the following election.