14 CFR 1212.604 - Social security numbers.
(a) It is unlawful for NASA to deny to individuals any rights, benefits, or privileges provided by law because of the individuals' refusal to disclose their social security numbers, except where:
(2) The disclosure is from a system of records in existence and operating before January 1, 1975, and was required under statute or regulation adopted before that date to verify the identity of the individual(s).
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.