42 U.S.C. § 4335 : The Public Health And Welfare — National Environmental Policy — Policies And Goals — Efforts Supplemental To Existing Authorizations Date: 10 Mar 2017 TEXT PDF The policies and goals set forth in this chapter are supplementary to those set forth in existing authorizations of Federal agencies. (Pub. L. 91–190, title I, § 105, Jan. 1, 1970, 83 Stat. 854.)