When sufficient evidence is presented to the Secretary by interested persons, or whenever the Secretary has reason to believe that a plan will tend to effectuate the declared policy of this chapter, he shall give due notice and opportunity for a hearing upon a proposed plan. Such hearing may be requested by any interested person, including the Secretary, when the request for such hearing is accompanied by a proposal for a plan.
(Pub. L. 91–670, title III, § 305, Jan. 11, 1971, 84 Stat. 2042; Pub. L. 101–624, title XIX, § 1939, Nov. 28, 1990, 104 Stat. 3866.)