I was born in Haiphong/Vietnam in 1976 to my mom a Vietnam Citizen, at that time. My family was sponsored to the United States by a church as permanent residence in 1981. I obtained United States Citizenship in 2011 through naturalization; I never had a Vietnamese passport. When becoming a United States Citizen, they took my green card and during the ceremony they did not require me to renounce any citizenship towards Vietnam. In fact, the USA does allow dual citizenship if you can obtain it. Vietnam laws allow dual citizenship, and just recently they amended the law to allow Vietnamese living abroad to retain their Vietnam citizenship. Originally it said that we would lose our Vietnamese Citizenship if we did not register by July, 1 2014, but they amended that law in June 2014 to remove that deadline.
My question is, because of my situation, does that allow me to obtain a dual citizenship with Vietnam? What would I need to do to have that happen?