Documents in a language other than English that go to USCIS need a full certified English translation accompanying the original. Consular requirements can differ, so check what the interview post asks for separately. Do not submit a knowingly incomplete package on the theory of supplementing later; an incomplete response can lead to a request or a refusal.
Ordering translations while the applicant travels
Translation can usually proceed while the applicant is away, so it belongs early in the schedule. Identify every non-English exhibit, obtain the certified translation with its certification statement, and keep original and translation paired in the file. Each document is governed by the actual requirement for that item — check validity, subsequent changes and any applicable recency requirement, so read them rather than assuming a fresh extract is always needed.
A usable certification identifies the translator, states competence in both languages, confirms the translation is complete and accurate, and is dated and signed. Tell the responsible office promptly about the birth through its authorized process and request the requirements for adding the child. Only successful vetting triggers a request to give US$1 million to the United States.