1996—Subsecs. (b) to (d). Pub. L. 104–170 added subsec. (b) and redesignated former subsecs. (b) and (c) as (c) and (d), respectively.

1991—Subsec. (b). Pub. L. 102–237 substituted “the Administrator” for “he” before “deems” and “the Administrator’s” for “his”.

1988—Pub. L. 100–532, § 801(l), inserted headings for subsecs. (a) to (c).

1975—Subsec. (a). Pub. L. 94–140 inserted “in accordance with the procedure described in section 136w(a) of this title” after “Secretary of Agriculture”.

Amendment by Pub. L. 100–532 effective on expiration of 60 days after Oct. 25, 1988, see section 901 of Pub. L. 100–532, set out as a note under section 136 of this title.

For effective date of section, see section 4 of Pub. L. 92–516, set out as a note under section 136 of this title.