Petitioner's new spouse's unmarried children

[trainee]

Sorry about the title - it must be a little confusing, and let me clarify: If an American has married a Chinese woman, what is the relation between the Chinese woman's unmarried children and the American? Adopted children and stepfather? Or else?

This question has arisen because during the interview, an applicant is asked to provide evidence of his or her relationship with the petitioner or other applicants. What evidence does the applicant have to provide if his or her mother, the petitioner's new spouse is applying for a CR1 and he or she is applying for a CR2?

If there is a relation of adoption between the applicant and the petitioner as mentioned above, does he or she have to submit documents like adoption certificates?

If so, is there an age level, applicants older than which don't need to provide such documents?

If not, or, if there is not such a relation, what evidence does the applicant have to provide? Evidence of his or her relationship with his or her natural mother - the petitioner's new spouse? Or evidence showing that he or she is getting on well with the petitioner - his or her mother's new spouse? Or both kinds are needed?

Thanks a lot.

[USCONGUZ]

If an American marries a Chinese woman, the American becomes the step-father of the Chinese woman's unmarried children. Evidence of the biological relationship between a beneficiary and his/her children can include notarial birth certificates, or in extreme cases, DNA test results. If the child is adopted, adoption decrees or notarial certificates would be required. In some cases, interviewing officers may ask for evidence of the parent or step-parent's relationship with a child, which could include photos, letters, phone records, videos, etc. Which kind of relationship evidence is needed depends on the circumstances of the case and the concerns of the interviewing officer. One of the colored refusal sheets should explain clearly (in English and Chinese) what type of evidence is needed.