Reuters:  “The U.S. Drug Enforcement Administration on Thursday denied requests to stop classifying marijuana as a dangerous drug with no medical use, leaving users and businesses in limbo after many states have legalized it for medical or recreational purposes.  The DEA though did relax certain restrictions on growing marijuana for research purposes.  For decades, marijuana has been listed as a “Schedule I” drug, placing it on par with heroin. The government has repeatedly rejected appeals for reclassification.”