I suppose you didn’t realize I was referring to the mainland.
And why would one single out the Mainland and act as if nothing else matters?
Yes, I imagine that those tend to simply ignore any who they see as "brown foreigners". To me, I do not segregate where people live in that way. Guam, Puerto Rico, and many other places they are as American as I am. And I have no problem telling others they are being "racist twits" if they seem to think that the only "Americans" that matter are those in the Lower 48.
I have served with the 294th Infantry Regiment from Guam. I defy anybody to go up to one of them and say they are not "American". They would probably break in half somebody that tried to tell them that. I also deployed with a gal from the Marianas, and she did often tell people off that would question why she was serving in the US. Not knowing she was as American as they were.