D.C. Code § 1-204.24b
Pub. L. 113-8, § 2(c) provided that the amendments made by the Act shall apply with respect to vacancies occurring on or after May 1, 2013.
Pub. L. 113-71, § 1(b) provided that the amendments made by the Act shall apply with respect to vacancies occurring on or after Dec. 26, 2013.