Hi,
I am a US Citizen by birth.
My (now) wife immigrated from Philippines under a K-1 visa (by me) with 3 children (K-2 visas) in 2008.
We married, went through Change of Status, Removal of Conditions for her and kids normally and without problems.
Wife and eldest child (who aged out) received US Citizenship and US Passports through Naturalization process, receiving US Certificates of Citizenship at that time. (2016 timeframe)
2 younger children (underage at 2016 timeframe) received US Passports through application by their mother.
Do the 2 younger children need to apply for Certificate of Citizenship using N-600?
Confusion for me: What does the CoC provide that possession of Passport not?
Thanks in Advance.
