to issuance of a writ under section 2241 of title 28, United States Code or section 1361 of title 28, United States Code, to effectuate immediate release. (3) Application to defendants previously sentenced In the case of a defendant who, before the date of enactment of this Act, was convicted or sentenced for any Federal offense involving marijuana, marihuana as defined in section 102(16) of the Controlled Substances Act ( 21 U.S.C. 802(16) ), or tetrahydrocannabinols and not serving a sentence for any conduct not covered by this Act or serving multiple sentences as provided in section 3584 of title 18, United States Code, the Director of the Bureau of Prisons, United States Marshals Service, or United States Parole Commission shall release such individual from its control within 14 days after the date of enactment of this Act. Any person not so timely released and entitled to such under this provision shall be entitled to issuance of a writ under section 2241 of title 28, United States Code or section 1361 of title 28, United States Code, to effectuate immediate release. (4) Cumulative sentencing reconsideration In the case of a defendant who, before the date of enactment of this Act, was convicted or sentenced for any Federal offense involving marijuana, marihuana, or tetrahydrocannabinols but is also serving a sentence for any other crime not considered a related nonviolent marihuana offenses by this Act, the sentencing court may, on motion of the defendant, the Director of the Bureau of Prisons, the attorney for the Government, or on its own motion, impose a reduced sentence after considering the factors set forth in section 3553(a) of title 18, United States Code. (5) Limitation to only cannabis This provision applies solely to persons who traded exclusively in marijuana, marihuana as defined in section 102(16) of the Controlled Substances Act ( 21 U.S.C. 802(16) ), or tetrahydrocannabinols rather than other substances controlled under the Controlled Substances Act. (6) Scope This provision applies to each