1998—Subsec. (a). Pub. L. 105–185 added subsec. (a) and struck out former subsec. (a) which read as follows: “Any person subject to an order may file, within a period prescribed by the Secretary, a written petition with the Secretary, stating that such order or any provision of such order or any obligation imposed in connection therewith is not in accordance with law and requesting a modification thereof or to be exempted therefrom. Such person shall thereupon be given an opportunity for a hearing upon such petition, in accordance with regulations made by the Secretary. After such hearing, the Secretary shall make a ruling upon such petition which shall be final, if in accordance with law.”