Maybe I put it incorrectly: they are closing non-US resident accounts. I know for sure that they don't accept UK residents as one example. You have to call them to find out if they accept your country of residence. http://www.reuters.com/article/usbrokers-europe-idUSL6E8L4AYW20121004 What country are from?
They don't accept accounts from some countries, it's not the citizenship of the person but where you live. I tried opening one previously, I got a courteous email saying they couldn't accept my account due to policy.