Recently me and my wife got our citizenship approved and applied for passports for us and our 2 minor sons (16 & 13). Hopefully we will get them within few weeks. I know now I should apply for N-600 for them, OCI, update Social security etc. I was wondering why should apply N-600 for my sons and spend $460 each? I tried to find the answers but did not find anything important. One of the message says "The naturalization certificate never expires whereas the passport does." This is not enough reason. You can always renew your passport and passport card, even the expired one or lost one. Please provide your expert opinion which can compell me to file for their N-600. I think during the this whole non-immigrant visa to GC to Citizenship, we (all of us) have spent a lot time, energy and money? Why spend (or donate) another $920 (for 2) to USCIS?