U.S. immigration law delegates the responsibility for issuance or refusal of visas to consular officers overseas. They have the final say on all visa cases. By regulation, the U.S. Department of State has authority to review consular decisions, but this authority is limited to the interpretation of law, as contrasted to determinations of facts. Determination of facts involves such issues as social, family, and economic ties, residence abroad, etc. An applicant can influence the Embassy to change a prior visa denial only through the presentation of new convincing evidence of strong ties through a new visa application and interview.