This is from memory and I do not have a link but someone may want to see if it helps shed any light on a small part of this SS# fraud. When I first looked into the information that BO has a history of using multiple SS#’s, I found an explanation for the “999” numbers. IIRC, they are temporary numbers - not “real” - that cannot be used for all the purposes of a real SS# and are typically issued to foreign students who need to have an SS# to use on various forms while in the U.S. going to school. Very limited usage for them. There was no further information that I found such as if they are issued with the second block of numbers related to when the number was issued or where it was issued like real SS numbers are. Sorry I did not keep the link.
If that info is correct, it fits in with the Occidental period. If he had his own SS#, he couldn’t use it and still claim to be a foreign student needing one of the 999 numbers. Truth is our boy was probably using both - or rather from the record you found, all three, a real one and two of the 999 numbers. Why would he have used two different 999 numbers while at Occidental? I also wonder if there is any record keeping of those numbers with disclosure when the recipient is deceased or if they are ever re-used since they are only used temporarily by the holder?
One of the 999 numbers could have been issued to the Kenyan birthed Obama and the other one issued to the adopted Indonesian Soetoro. Both foreigners. Double dipping the scholarships.