The documents required for the K-1 visa interview are Completed Form DS-160, an international passport to travel to the United States, birth certificate, divorce or death certificate(s) for both you and the U.S. citizen sponsor, police certificates, medical examination, two (2) 2x2 photographs, evidence of financial support (Form I-134), proofs of relationship with your U.S. citizen fiancé(e), payment of fees.