Preemption

(a) States in which cannabis is unlawful Nothing in this Act shall be construed to preempt or supersede any State law that prohibits the manufacture, distribution, or possession of cannabis for all individuals in that State, except for the purpose of permitting the interstate transport of cannabis through that State to a final destination in a State in which possession of cannabis is lawful by the intended recipient. (b) States in which cannabis is lawful This Act preempts the laws of a State that does not prohibit the manufacture, distribution, or possession of cannabis for all individuals in that State (except with respect to age limitations) to the extent that such laws restrict the interstate or intrastate shipment of cannabis or a cannabis product directly to an individual with respect to whom the possession of cannabis or a cannabis product is lawful under the laws of the State.