Hi so I moved to the US at nine where I obtained citizenship through my father I also obtained a greencard but never

Question

Got a citizenship certificate I am now now 21 years old and wants to proof my citizenship but my dad refused to give me his documents to prove my status ,should I file for n-600 or n-400

James L. Arrasmith · Answer

Since you were born outside the US but acquired citizenship through your father, the N-600 application would be the right option. This form is used to apply for a Certificate of Citizenship, which confirms that you are a US citizen. You are eligible for this if you were under 18 when your father became a US citizen and you had legal permanent resident status. 
 
Even though you don't have your father’s documents, you can still provide other evidence to establish your citizenship. The N-600 process requires proof of your relationship to your father, proof of his citizenship, and your status as a lawful permanent resident. In your case, even without your father's documents, you can look into getting alternative proof, like your green card or your father’s naturalization certificate if available through other sources. 
 
The N-400 is used to apply for naturalization, which isn't needed in your case since you’re already a citizen. Filing the N-600 will help you obtain the official certificate to confirm your citizenship status. If you have difficulty proving your relationship or other details, consulting an immigration attorney might help guide you through the process.

Q: Hi so I moved to the US at nine where I obtained citizenship through my father I also obtained a greencard but never