Wait, maybe rewind this a little? I know that the European settlers that created the US took the continental land from the natives, but how did they end up with claims to Hawaii and the Philippines in the first place?
Your response was "what about Japanese war crimes?"
Please stay on topic.
The US being in the Philippines and Hawaii has nothing to do with Hiroshima, other than the US being there when Japan attacked. Japan attacked the wrong country and this resulted in decisive force being used against them.
And, sorry, "whataboutism" is a cheap cop-out. Historical incidents should be seen in context, not just as isolated finger pointing (and always from one side to the other).