Nothing contained in this subchapter shall be construed to preclude any State from providing, or any individual from purchasing or otherwise securing, protection against the cost of any health services. 42 U.S.C. § 1395b Aug. 14, 1935, ch. 531, title XVIII, §1803, as added Pub. L. 89-97, title I, §102(a), July 30, 1965, 79 Stat. 291. STATUTORY NOTES AND RELATED SUBSIDIARIES IMPACT OF INCREASED INVESTMENTS IN HEALTH RESEARCH ON FUTURE MEDICARE COSTSPub. L. 105-78, title II, Nov. 13, 1997, 111 Stat