He overstayed his visa by 3 months then he is unlawfully present in the US. Once he is unlawfully present by 180 days, once he leaves the US he will be barred from reentry for 3 years; if he is unlawfully present for 365 days and leaves, he will be barred from reentry for 10 years.
Answered on Mar 05th, 2012 at 2:56 PM