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父母在国内。我已经交了DS260 和 I864。现在在准备 step 5: Collect Supporting Documents


Review each item below, and obtain any that apply to you or your immigrating family members.



Adoption Documentation

Birth Certificates

Court and Prison Records

Marriage Certificates

Marriage Termination Documentation

Military Records

Petitioner Documents

Photocopy of Valid Passport Biographic Data Page

Photographs

Police Certificates

我应该要submit Birth Certificates, Marriage Certificates and Police Certificates. Is this correct? 
-Yes, and also provide the photocopies of your parents marriage certificate, their birth certificate, and their police clearance certificate (non-criminal record).   Also provide the photocopy of your passport (information page). 
Read this link:
http://travel.state.gov/content/visas/english/immigrate/immigrant-process/documents/submit/documents-to-submit-to-nvc.html

 Thank you.