1992—Puspan. L. 102–486 amended section generally. Prior to amendment, section read as follows: “To the extent that any provision of this subchapter applies to any act or omission, no State or any political subdivision thereof may adopt, enforce, or continue in effect any provision of any law or regulation (including any remedy or penalty applicable to any violation thereof) with respect to such act or omission, unless such provision of such law or regulation is the same as the applicable provision of this subchapter.”