I already answered this question for you on the past. The answer is still the same, if you a USC, you meed to report his birth to the consulate and collect his passport. Wife still needs i130
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It depends. You should contact an immigration attorney to discuss the details of your situation.
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You will need to file one (1) I-130 for each your wife and son, even if you are a US citizen now.
You can only "transmit " citizenship on a minor child if you lived in the US at least five (5) years, two (2) of which MUST have been prior to you reaching age 15. Failing that you'll need to file fr the kid's green card (I-130 followed by immigrant visa petition, just like for your wife.
The only difference being that for your son you'll file a n N-600 Certificate of Citizenship as soon as he'll be admitted here on an LPR (green card) status.
Behar Intl. Counsel 619.234.5962 Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.