That sounds made up. There's people from countries like China, Russia, and Iran that have been able to get security clearances in the US. You may have to give u

That sounds made up. There's people from countries like China, Russia, and Iran that have been able to get security clearances in the US. You may have to give up your birth country's citizenship, and someone from Iran is definitely more likely to be denied a clearance, but there's not blanket discrimination based on national origin. I don't think ITAR even distinguishes between someone who was born here and someone who was naturalized (as long as they don't keep their old passport).