The visa expired before the thesis defense. How can I renew it?

Regarding the renewal of the contract, it is not specified how long the contract must be renewed in advance. If it is one year, it is best to apply one month in advance.

The tourist visa to the United States is B2 visa, which is suitable for the following groups: 1. Visit relatives and friends; 2. Tourism; 3. seek medical attention; 4. Handling emergencies: casualties of relatives, property disputes, etc. ; 5. Attend a child's graduation ceremony or wedding; 6. Participate in various community activities; 7. Participate in various amateur concerts and sports meetings.

The B2 visa allows you to stay in the United States for six months. After the expiration, you can apply to the US Immigration Service for an extension, which can be extended twice at most, each time for 6 months. It is worth noting that visa holders are not allowed to be employed during their stay in the United States. There is no visa fee for this visa.

Materials to be submitted for visa renewal:

1, basic material

0f- 156 Form, photo, invitation letter or reasons for going to the United States, passport valid for more than 6 months,

2. Supplementary materials

(1) Economic guarantee issued by American relatives and friends.

(2) the applicant's economic proof (such as bank deposit certificate, traveler's checks, etc.). )

(3) Round-trip air tickets.

(4) Explanatory materials, such as real estate license, owner's certificate and work certificate.

Special note: B2 visa application cannot be appealed after it is refused.