I'm a US citizen born abroad - I got my citizenship via (I believe) INA 320 when I was a child. I have a US-born father who was not eligible to pass on his citizenship at the time of my birth. I lived in the US for most of my childhood up until ~2015 (initially as an LPR), and at some point, I obtained a US passport.
I don't have a certificate of citizenship, only a US passport. Given the way the US is going, I'm concerned that one day I'm going to apply renew my passport or otherwise have to prove my citizenship, and I'm not going to be able to sufficiently document it. Is this a real risk? Would you advise applying for a CoC in my circumstances? Am I even eligible to apply for one given that I live abroad? What other steps if any should I take to protect my status?