processing at the NVC National Visa Center Process National Visa Center processing at the NVC Centro Nacional de Visas (NVC) del Departamento de Estado National Visa Center National Visa Center National Visa CenterÂ National Visa Center processing at the NVC Centro Nacional de Vistos National Visa Center and processing at the NVC National Visa CenterÂ National Visa Center, or NVC U.S. Department of State: National Visa Center National Visa Center processing at the NVC processing at the NVC processing at the NVC