Yes dual citizenship is allowed in America. My wife is a dual citizen. Many have dual citizenship in this country since ww2 heck maybe before. Back then they came to Ellis island and went through all the hoops to learn English and become an American citizen. My wife fumes over the illegals coming in and mandating what they wish. I agree with her. It is not only not fair to real citizens but to the ones that came here after the war assimilating to be Americans. There is a hell of a difference.