1985—Pub. L. 99–198 amended section generally, substituting provisions relating to enforcement for provisions relating to referendum and cattle producer approval of orders, reimbursement of expenses by Secretary, procedural requirements, and bonding requirements.

1978—Pub. L. 95–334 substituted “a majority” for “not less than two-thirds”.

Amendment by Pub. L. 99–198 effective Jan. 1, 1986, see section 1601(c) of Pub. L. 99–198, set out as a note under section 2901 of this title.