The Trump administration is changing the way marijuana is regulated. In a major policy shift, it is reclassifying some marijuana by removing it from the Schedule I tier occupied by such drugs as heroin and LSD. A Justice Department order on Thursday launched the shift, with a focus on state-licensed medical use. The administration is also moving toward an expedited reclassifying of marijuana more broadly. A Drug Enforcement Administration hearing is scheduled for June 29. Marijuana still isn’t legal under federal law, though 40 states and the District of Columbia permit its medicinal or recreational use. Now, with licensed medical marijuana classified as a Schedule III substance, it will be subject to fewer regulations.…