The oath usually completes adult naturalization.
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The key idea
The oath normally completes adult naturalization; child citizenship and limited USCIS-approved oath waivers follow different rules.
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For most adults applying through Form N-400, approval is followed by the Oath of Allegiance. The oath normally completes naturalization. USCIS can approve an oath waiver in limited disability-related circumstances. A disability does not automatically mean the oath is waived.
Citizenship through a parent is a different process. Some children acquire citizenship automatically when all applicable legal requirements are met. Form N-600 can provide proof of citizenship already acquired; it does not create citizenship by itself.
Official N-400 instructions · Official child citizenship requirements
This is education, not legal advice. USCIS handles your naturalization application.
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Is N-400 approval normally the final adult naturalization step?
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No. Most adults must take the oath; USCIS may approve a limited waiver.
Check the official guidance ↗This is a learning exercise. It does not decide eligibility or test readiness.