((a)) ** In general** The Mediation Board shall have the authority from time to time to make, amend, and rescind, in the manner prescribed by , and after opportunity for a public hearing, such rules and regulations as may be necessary to carry out the provisions of this chapter.section 553 of title 5
((b)) ** Application** The requirements of subsection (a) shall not apply to any rule or proposed rule to which the third sentence of applies.section 553(b) of title 5