The US Supreme Court voted six-three that medical use of marijuana was illegal in a vote last week, despite laws in 11 states that permit its use. The court ruling puts the federal government at odds with many in the scientific establishment and with public opinion. The decision is unlikely to affect people living in states that allow medical marijuana use, where state laws permitting this use are still in effect, however. Most people who are prosecuted for use or possession of marijuana are large scale drug dealers, not those using the drug under a doctor's supervision to …