ST. PAUL. Minn.  – The Minnesota Supreme Court overturned lower court decisions, ruling that medical marijuana, even if prescribed, is not covered by workmen’s compensation. The high court’s reasoning: Marijuana remains illegal under federal law. State law allows prescribing and possessing marijuana for injured workers, but the federal law outweighs the state law, the Court said. The decision was a 6-1 split. Justice Margaret Chutich dissented. Why, she asked, should injured workers who suffer intractable pain be denied the relief that medical cannabis can bring.