How to apply for U.S. visa extension

U.S. visas of any type cannot be extended and you must reapply for a visa. If the visa you hold is still valid or the expiration date has not exceeded 12 months, you can apply for U.S. visa renewal! - B1/B2 visa cannot be renewed before it expires, and you can apply for renewal within 12 months after expiration; - If you are renewing an H-1, H-4, L, P-1 or P-2 visa, your current visa must be valid or expired no more than 12 months ago. - To be eligible for the renewal delivery service, F-1 visa applicants need to continue studying at the U.S. school or institution they have enrolled in, while J-1 visa applicants need to continue participating in previous exchange programs.