They are in a visa right? Like B2? You still apply birth registration with the citizenship card. You know you can have some one go to the ward office and make a certification of birth. In my case, I noticed my mom’s DOB on passport and birth certificate were different. So I have to wait until Tihar to apply passport and will have to fix it. During my parents’s I-130 they sent RFE because my birth certificate was issued 7-9 years after the birth. So wanted to see my high school certificates, letter from primary school, vaccinations.