How bad is it in Russian prisons that the convicts are willing to fight and die in Ukraine?
How many convicts in America would fight to be free? How about illegal aliens, what would they do to stay? You don’t strike me as particularly intelligent.
Once upon a time in the US judges gave a lawbreaker the choice between prison or join the military right up through Vietnam that I know of. Most chose the military, even before then went to prison. So you little argument fails.