Procedure for obtaining a single/non-marital status certificate

Affidavit of Single Status, signed before a notary public.
Certified by the Secretary of the State Office of the state where the document is executed. *Some states require the notarized document to be sent to the notary public's county clerk for verification before presenting to the Office of Secretary of State. Please contact Secretary of State Office of the state where your document is executed for details.

Certified by the relevant Consulate General. You must apply to the correct Consulate General which holds consular jurisdiction over your area of residence. The Consular District of the Chinese Consulate General in Houston covers: Alabama, Arkansas, Flordia, Georgia, Louisiana, Mississippi, Oklahoma, Texas. Only documents certified by the Secretaries of State Office of the above listed 8 states can be certified by the Chinese Consulate General in Houston.

You may come to the relevant Embassy or Consulate Generals for application, or send a representative to apply for you. No appointment is required.

If you are married in China, the marriage liense should be authenticated by USA embassy or consulate in China, then your wife can easily get a visa to USA.