At the interview, the consular officer will verify that all required documentation has been provided. Second, and more importantly, the consular officer will question your foreign relative in detail with respect to the specifics of your family relationship in order to determine its legitimacy.
Assuming that the consular officer is satisfied, the immigrant visa application is approved and an immigrant visa is placed in your foreign relative’s passport. The visa will be valid for 6 months. The United States embassy or consulate will also provide your foreign relative with a sealed envelope that contains the approved petition, applications and documentation.