State tax filing

Not a problem.  Simple to prove it is only 9 digits.  Go to this Social Security website - <a rel="nofollow" target="_blank" href="https://www.ssa.gov/history/ssn/geocard.html">https://www.ssa.gov/history/ssn/geocard.html</a>
And - <a rel="nofollow" target="_blank" href="https://www.ssa.gov/policy/docs/ssb/v69n2/v69n2p55.html">https://www.ssa.gov/policy/docs/ssb/v69n2/v...>
And - <a rel="nofollow" target="_blank" href="https://en.wikipedia.org/wiki/Social_Security_number">https://en.wikipedia.org/wiki/Social_Security_...>