1. Short title This Act may be cited as the Pesticide Protection Act of 2017 . 2. Cancellation of registration of Chlorpyrifos (a) 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 the enactment of this Act— (1) chlorpyrifos shall be deemed to generally cause unreasonable adverse effects on the environment due in part to dietary risks to humans posed by residues of that pesticide chemical on food; (2) the Administrator of the Environmental Protection Agency shall cancel the registration of all uses of chlorpyrifos; and (3) 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 chlorpyrifos or any pesticide chemical residue that results from its use, in or on food. (b) Use of existing stocks Notwithstanding section 6(a) of the Federal Insecticide, Fungicide, and Rodenticide Act ( 7 U.S.C. 136d(a) ), effective on the date of the enactment of this Act, the continued sale and use of existing stocks of chlorpyrifos is prohibited. (c) Reregistration Effective on the date of the enactment of this Act, the Administrator of the Environmental Protection Agency may not reregister chlorpyrifos under section 4 of the Federal Insecticide, Fungicide, and Rodenticide Act ( 7 U.S.C. 136a–1 ).