sentences:  The temporary visa would be valid for three years and renewable one-time for an additional three years.Employers may hire these new immigrant workers only if they are unable to find a qualified American worker and only if they are located in an area with an unemployment rate lower than 10 percent for workers whose education level is at or below a high school diploma.The visa program has an initial cap of 400,000, which adjusts up or down yearly based on market fluctuations.