“Well, technically it’s only a contract between people of honor.”
You give governments far to much credit, which is why the USSC limits the federal government. How is SS a contract if it is beyond the consititutional limits?
You would have to look at the original wording of the act. It would be analogous to an insurance program. The original language is Social Security Insurance. The monthly payout is in proportion to the amount put in on your behalf. The “contract” specifies how that is figured.