(a) Severability If any provision of this chapter, or the application of any provision of this chapter to any person or circumstance is held invalid, the application of such provision or circumstance and the remainder of this chapter shall not be affected thereby. (b) Savings Nothing in this chapter— (1) diminishes or expands the trust responsibility of the United States to Indian tribes , or any legal obligation or remedy resulting from that responsibility; (2) alters, abridges, repeals, or affects any valid agreement between the Forest Service and an Indian tribe; (3) alters, abridges, diminishes, repeals, or affects any reserved or other right of an Indian tribe ; or (4) alters, abridges, diminishes, repeals, or affects any other valid existing right relating to National Forest System land or other public land. ( Pub. L. 110–234, title VIII, § 8107 , May 22, 2008 , 122 Stat. 1289 ; Pub. L. 110–246, § 4(a) , title VIII, § 8107, June 18, 2008 , 122 Stat. 1664 , 2051.) Editorial Notes Codification Pub. L. 110–234 and Pub. L. 110–246 enacted identical sections. Pub. L. 110–234 was repealed by section 4(a) of Pub. L. 110–246 . Statutory Notes and Related Subsidiaries Effective Date Section and repeal of Pub. L. 110–234 by Pub. L. 110–246 effective May 22, 2008 , the date of enactment of Pub. L. 110–234 , see section 4 of Pub. L. 110–246 , set out as a note under section 8701 of Title 7 , Agriculture. CFR Title Parts 36 223