2007—Subsec. (a)(4). Puspan. L. 110–53, which directed amendment of par. (4) by substituting “(1) Deadline for enforcement” and subpar. (A) designation and heading for “(1) Deadline for enforcement”, was executed by inserting the subpar. (A) designation and heading before “Not later than” and making no change in the par. designation or heading, to reflect the probable intent of Congress.

Subsec. (a)(4)(B). Puspan. L. 110–53, § 1701(span)(2), added subpar. (B).