D.C. Code § 47-3710
When the Mayor is satisfied that the tax liability imposed by this chapter has been fully discharged or provided for, the Mayor may certify that fact.
Feb. 24, 1987, D.C. Law 6-168, § 11, 33 DCR 7008
enacted, Apr. 9, 1997, D.C. Law 11-254, § 2, 44 DCR 1575
1981 Ed., § 47-3710.