Does having a Green Card validate as being a U.S. Citizen? I'm not so clear about those terms but I will have no problem getting a Green Card as my father will be moving to the US and thus can arrange a family member Green Card for me.
Actually the official word on "citizenship" can be found here,
http://www.uscis.gov/naturalization , but in common word maybe referring to U.S. Citizen also means a person with a valid Green Card.