US FDA's Califf Defends Agency Work On Marijuana Rescheduling, Animal Testing

House appropriations subcommittee chair Andy Harris, R-MD, says the agency ignored several important factors in recommending that marijuana be reclassified as a Schedule III drug; Califf tells ranking member Sanford Bishop, D-GA, that although work is progressing on animal testing alternatives, 'we're a long way right now' from eliminating animal studies before first-in-human trials.