20 CFR § 416.2035 - Optional supplementation: Additional State options.
(a) Residency requirement. A State or political subdivision may impose, as a condition of eligibility, a residency requirement which excludes from eligibility for State supplementary payment any individual who has resided in such State (or political subdivision thereof) for less than a minimum period prescribed by the State. Any such residency requirement will be specified in the agreement.
(b) Lien and relative responsibility. A State which elects Federal administration of its supplementary payments may place a lien upon property of an individual as a consequence of the receipt of such payments or may require that a relative of the individual contribute to a reasonable extent to the support of the individual, providing it is stated in the agreement that:
(1) The Commissioner has determined that the specific State laws and their enforcement are consistent with the supplemental security income program purpose of providing unencumbered cash payments to recipients; and
(3) Neither the basic Federal benefit nor any part of the State supplementary payment financed by Federal funds will be subject to the liens or encumbrances of such laws.