D.C. Code § 6-641.04
Any amendment of the regulations or any of them or of the maps or any of them shall require the favorable vote of not less than a full majority of the members of the Commission.
June 20, 1938, 52 Stat. 798, ch. 534, § 4
1973 Ed., § 5-416.
1981 Ed., § 5-416.