If you came to the United States on a nonimmigrant visa and you want to extend your stay you must apply with USCIS before your authorized stay, denoted on your admission stamp or paper Form I-94, expires. It is recommended you apply well in advance of your expiration date. To learn more select USCIS, How Do I Extend My Stay?.
Important Note: Providing permission to enter and/or remain in the United States. to persons holding a nonimmigrant visa is not the responsibility of the Department of State, and therefore Visa Services is unable assist you in this regard. All inquiries must be directed to USCIS.