but if your bank account and broker are in same country, its almost unheard of that you will not get your money back if you request for it. If they don't then you can only go and file a case against them. This is why its important to have bank account in same country, so at least you will have legal options available to you.

I agree with @LastDino. I would think your more likely to have problems with international wires than you are domestic transfers. Since your asking this to be cautious, and not because you already have a problem, I would recommend you actually ask these questions to any broker you are considering. 'Know Your Customer' {"KYC") rules have got very strict in the US so I think you will find most reputable brokers will be very open about what they will and won't allow. Also if you really are worried about this, you may want to focus on brokers that are known to have good customer service - don't want to get into this situation with a broker than you can never get hold of a human being. Maybe even consider an Introducing Broker. Their customer service is often better than the brokers themselves. I've personal experience with @mattz at Optimus and his teams customer service is excellent. He offers clearing options at several of the major FCMs.