In general— Pursuant to section 6(b) of the Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. 136d(b)), effective on the date of enactment of this Act—
diquat shall be deemed to generally cause unreasonable adverse effects on the environment (as defined by section 2 of the Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. 136));
following such cancellation, the Administrator shall, in accordance with section 408(l)(2) of the Federal Food, Drug, and Cosmetic Act (21 U.S.C. 346a(l)(2)), revoke any tolerance or exemption that allows the presence of diquat, or any pesticide chemical residue that results from diquat use, in or on food.
Sale and use of existing stocks prohibited— Notwithstanding section 6(a) of the Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. 136d(a)), effective on the date of enactment of this Act, the continued sale and use of existing stocks of diquat shall be prohibited.
Reregistration prohibited— Effective on the date of enactment of this Act, the Administrator of the Environmental Protection Agency may not reregister diquat under section 4 of the Federal Insecticide, Fungicide, and Rodenticide Act (7 U.S.C. 136a–1).