The Obama administration has denied a bid by two Democratic governors to reconsider how it treats marijuana under federal drug control laws, keeping the drug for now in the most restrictive category for U.S. law enforcement purposes. Drug Enforcement Administration (DEA) chief Chuck Rosenberg says the decision is rooted in science. Rosenberg gave "enormous weight" to conclusions by the Food and Drug Administration (FDA) that marijuana has "no currently accepted medical use in treatment in the United States". (See also: DEA decides not to loosen restrictions on marijuana, keeping it schedule 1 (with heroin))