I didn’t get a SSN until I was in high school.
Me too. I didn’t get a SSN until my first job and my employer wouldn’t pay me until I did.
Right. I'm about Obama's age. Back then, SS#'s were not assigned at birth. I got my SS card when I got my first job, as you only needed an SS# when you got a job where they needed to withhold taxes.
In Obama's case, if he got a Connecticut SS#, it would have been as a byproduct of claiming a Connecticut residence in order to evade NY taxes.