; (B) use, hold, or process commercial asbestos fibers solely for the purpose of manufacturing diaphragms for use in the chlor-alkali process; and (C) use asbestos diaphragms in chlor-alkali production. (5) Exemption for national security reasons (A) In general Notwithstanding any other provision of this subsection, the President may, on application, grant any person an exemption from the prohibition under paragraph (3) once for the manufacture, processing, use, or distribution in commerce of commercial asbestos or any mixture or article containing commercial asbestos only if the President determines that— (i) the manufacture, processing, use, or distribution in commerce of commercial asbestos or any mixture or article containing commercial asbestos by the person is necessary to protect the national security interests of the United States