Supporting Ukraine is not just a money thing, it is a moral obligation. The USA has morally made the wrong decision in giving up on Ukraine, as the many US Americans volunteers inside of Ukraine will tell you. Instead, the USA has, through Trump, decided to side with Putin (perhaps even a video recording of Trump having sex in a Moscow hotel plays a role in this) this is despicable; Putin is an evil dictator. Taken together, US Americans, this is hard to forgive, you are now on the wrong side of history. In addition, this war impacts the USA directly, you can try to be protectionist and isolationist as much as you want, as the two world wars have shown, not confronting dictators never works.