Hi, I am applying for the N600 through my father's naturalization. My family(mom, dad, and sis) and I arrived in the US back in 1991. We received our green card not long after. In 2000, my father became a US citizen. I was 13 years old at time and was living with my parents. However, my parents do not have a marriage certificate, but I was in the legal and physical of my dad til I was 18. I do have other documents such as birth certificate, school records with both my parents name and address, my learner's permit when I was 16 with the same address as my father. I am also listed on his beneficiary with his life insurance that he got back in 2000. Will this be enough proof? Thanks everyone