Overstaying your visa can be very serious. If you overstay your visa for 180 days or more (but less than one year), when you depart the U.S. you will be barred from reentering the U.S. for three years. If you overstay your visa for one year or more, when you depart the U.S. you will be barred from reentering the U.S. for ten years.What is the US tourist visa duration?
The US Tourist Visa (B-1/B-2) is a non-immigrant US Visa. Its validity period ranges from 1 month to 10 years and allows single, double or multiples entries to the US. The period of stay which is a maximum of 6 months is recorded by the Customs and Border Protection officer.