So the upshot of your info is that Obama may not have used a special foreign national type SS#? Agree w you re: his tax returns from ‘91—they wd be interesting to say the least.
No, my point is that I can’t find anything that indicates that you can look at an SSN to determine if it has been issued to a foreign student or a US citizen. The actual SSN card may indicate that someone is a non-citizen, but the number may not.