Eagler,
America First has a long and nasty history (
https://en.wikipedia.org/wiki/America_First_Committee).
Currently, slogan is associated with someone who admires Putin, expressed it on number of occasions and actively threatened Ukrainian government if it wouldn't support his political agenda. Based on those facts, one can logically surmise what is that person likely to do if they were to be in power again. He clearly showed that for him it isn't America First, it is only "me first". But then again, he might be megalomaniacal enough to identify himself as personification of USA.
But more important question is - what do we lose? Our current support is mostly out of storage which we would pay to utilize in couple of years. We're actually saving on maintenance and disposal costs. We're yet to send anything out of active service or anything that would decrease our own readiness levels.
What do we get in return? Russia is bleeding itself dry, it is clearly shown to be a paper tiger and we can start thinking about concentrating on China as Russia isn't a near peer in any sense of the word. Our industrial military complex is having a sale of the century as everyone knows that russian hardware is not very good, we're moving more and more industry back.
As harsh as it sounds, USA benefits out of this war. And before our local conspiracy theorists arrive, so does everyone else ( other then russia). Nobody provoked Putin, he made that choice and now he is ripping the consequences.
You said that it is a long war and you are concerned about loss of life. Fair enough. Would you give up ? If the Red Dawn scenario arriveed, would you be ok with giving part of the country to the invader, or giving it all? Isn't it better to die standing up rather then live on your knees? We, as Americans don't bow to anyone. You diddly with us, you get diddlyed. Well, Ukrainians aren't much different. They are just as proud, and we're helping a good cause. We're helping them to stand against odds. If they had too much victims, they will choose when to stop. But as long as they want to keep going, as long as they want to be free men rather then russian slaves, we owe it to them to help. It aligns with our principles and doesn't cost us much. Helping ukraine is very much putting america first.
Dmonslyr - get help please. I'm not sure how you arrived at that alternative reality, but it isn't healthy. World is not one big conspiracy, with masterminds and puppeteers. If you ever worked in any large project or company, you should observe that it is nearly impossible to organize people to do things in secret or for people to have same determination to a shared goal. Most organizations have hard time functioning day to day, doing any clandestine/far reaching/secretive/coordinated on global scale projects is simply impossible. It only exists in James Bond movies....