§ 6313.
Nothing in this chapter shall prohibit a State from adopting or enforcing supplemental or more stringent laws or regulations not inconsistent with this chapter, or criminal, civil, or administrative fines for violations of such laws or regulations.
([Pub. L. 104–272, § 22], formerly § 14, Oct. 9, 1996, [110 Stat. 3313]; renumbered § 22, [Pub. L. 106–210, § 4(1)], May 26, 2000, [114 Stat. 322].)