When you receive a Social Security number, the first three digits indicate the region from which it is issued. It is issued from the region where you are living when it is applied for.
According to public records, the first three digits of Obama's Social Security number are 042. That is the designation for Connecticut. The region numbers for Hawaii are 575 and 576.
How then if he lived in Hawaii after his return from Indonesia and up until he went off to college, did he get a Social Security number issued out of Connecticut? He had to have had one when he applied to the Selective Service in 1980, prior to going off to college.
Before 1972, the 3-digit location code indicated where the applicant lived, but after 1972, it was based on the postmark of the application.
If that's his actual SS#, it simply means that it was mailed from Connecticut. He could have been visiting there on a school break.
Nothing really sinister.
E-Verify!