I'll be honest. Most Americans don't even realize Roma are a real group of people. They hear gypsy and think crystal balls and magic. The population is much smaller and more integrated in the US than in Europe so many have never met someone from that group. But I mean if you want the honest answer, a person that looks white in America is considered white until a reason is given otherwise. Maybe a name. Maybe a symbol. Maybe they say something. My youngest son can pass for white easily. Asheknazi jews are white by current american standards, but I don't see white southern baptists churches needing armed security during service. And I'm one generation shy of when Jews weren't allowed in to certain places.
Race is weird in America. And Americans are very touchy about it on both sides. I think it's because it's built on a house of cards, but so many fundamental things revolve around it. Racial justice on the left. Umm... other things on the right. Like racism is definitely real. I can make it through police checkpoints without getting stopped, while my wife gets stopped every time. But Americans like to pretend there is some true hard standard when it is all a wobbly social construct.