Pub. L. 91-452, tit. VIII, pt. E, sec. 811

Sec. 811. No provision of this title indicates an intent on the part of the Congress to occupy the field in which such provision operates to the exclusion of the law of a State or possession, or a political subdivision of a State or possession, on the same subject, matter, or to relieve any person of any obligation imposed by any law of any State or possession, or political subdivision of a State or possession.