D.C. Code § 4-108: Rules and regulations relating to admissions of persons and administration of institutions.

It shall be the duty of the Council of the District of Columbia to make such rules and regulations relating to the admission of persons to, and it shall be the duty of the Mayor to make such rules and regulations relating to the administration of, the institutions hereinbefore referred to, as will promote discipline and good conduct of inmates and employees and efficiency and economy in the operation of these institutions.