I didn't remember that tiny detail. I also did some googling.Indeed, she was born in the US but the whole family moved to Cairo at the tender age of 6 months old. Ororo didn't set a foot back in a native english country until she was much, much older. Her native english father also died when she was very, very young. I say all this because in the comics she was also written with some kind of not-native details in the dialogue, like Gambit's creole text, or Colossus's russian words peppered throughout. I have no problem with the actress being american, just with there not being a hint that most of Storm's life and upbringing had nothing to do with the United States and molded a different personality that what has come into the movies. I'm not surprised though, with Fox's now legendary reworking of these characters.