I think Americans in general don't see it as a difficult choice to support Ukraine
Politicians find it difficult because Republicans are pro-russian, and both parties are heavily aligned with Israel. So Ukraines the only one really seeing any push back.
I find it funny that Americans (esp. Republicans) who love to «win» at all things, would be fine to allow Russia to win against the west in Ukraine. I think if they decide to stay on their isolationist path, Lavrov’s propaganda from earlier in the week will come true, and the US will seize to be a superpower. «Greatest country in the world»? Starting to look pretty weak to me.
These two conflicts have a lot of points of views. In russia ukraine its a bit easier because russia attacked ukriane so its pretty clear that russia is the "evil". But with israel and gaza a lot of people confuse palestinians with hamas and israeli people with the israeli government. Ad for why ukraine supports israel when they are much closer to gaza i think its because they really need the us and eu to help so they didnt even have an option.