I was just shot down by most brokerages in Europe because I'm a US/Irish dual citizen. Interactive Brokers finally said "yes". Meanwhile, every account I have b

I was just shot down by most brokerages in Europe because I'm a US/Irish dual citizen. Interactive Brokers finally said "yes". Meanwhile, every account I have been able to open asks if I'm a US citizen and demands my (US) details - they do this even if you've never set foot in the US before.