If I was a secret immortal how long could I keep the same US ID for before I get taken away for study. I'm thinking 150 years.
It's not like there are people checking for immortals, I think it would be flagged by a dmv employee or something when they dont believe a clear 21 year old is actually 150. Let's assume it's current day im caught and not bring speculation on what the US is like in the year 2139 is like.
Why would you want to rule the world? That hasn't gone well for anyone that has attempted it, and just because you don't age doesn't mean you are bulletproof or explosives proof.