Then it shouldn't be a problem. if you were a dual citizen then you would have to give up your citizenship for security clearance, but if all you have is family there, you will undergo an interview about your family but other than that you will be fine.
I wouldn't really know, but I think it probably would REALLY help. All of the SA's are big on diversity, and being fluent in a language, especially one used in the middle east would look fairly valuable.
Armand1694, I don't know how many clear & good responses you will receive with this thread as you'd kind of gotten repetitive by posting very similar questions: