To prepare for an immigration interview for a Green Card, review your application and supporting documents very carefully. Make sure that you have with you all originals and copies: passport, birth/marriage certificates, employment proof, etc. Anticipate the questions, particularly those concerning your family or work situation. Be nice-looking, arrive early, and remain calm during the process by answering in an honest and succinct manner. Bring with you, if necessary, legal representation to help with complex cases. Preparation is key for an easy, successful interview and your best chance to obtain a Green Card.