If you get into trouble though, the UK will say "well, it's your own silly fault, then", while the US is more likely to chest-beat and cry "No citizen left behind!". Not guaranteed, of course, but far more likely to do something.
I once travelled with a trinational lawyer. She self-identified as Dutch, sounded English, but chose to travel on her third passport, the US one, specifically for the above reason.
I once travelled with a trinational lawyer. She self-identified as Dutch, sounded English, but chose to travel on her third passport, the US one, specifically for the above reason.