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Asker
Posted about 2 years ago.

Thank you so much for offering your help! I've added some more details. Are they helpful? Please let me know, thanks a lot!

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Asker
Posted about 2 years ago.

Also, in this situation, after the marriage, I will not be considered as "adopted" by the US citizen step father, right? Thank you!

Ksenia Alexandrovna Maiorova
Ksenia Alexandrovna Maiorova, Immigration Attorney - Orlando, FL
Posted about 2 years ago.

Yes, the additional information helped. Please see my analysis below. No, you will not be considered adopted by your step-father. Should you decide that you want to be adopted by him, there is a separate process that goes through state court. You would have to consult a family attorney in the state where you will all be residents to determine if it's possible (given your age) .