Colorado KUNC radio:  “Federal prosecutors . . . targeted medical marijuana dispensaries within 1,000 feet of schools for their first crackdown since hundreds of shops . . . began spreading across the state in 2009.  U.S. Attorney John Walsh cited a ‘dramatic increase in student abuse of marijuana’ in warning 23 dispensary operators to move within 45 days or face criminal action and seizure of their property. That deadline expires Feb. 27.  Scores of other dispensaries can expect shutdown notices soon. In all, Walsh now says he plans to target over 100 Colorado dispensaries located within 1,000 feet of a school, relying on federal law that creates stiffer penalties for any drug use near schools, playgrounds and places where young people gather.  The federal Drug-Free Schools Act applies to public and private schools from grades 1-12, along with both public and private colleges and universities.”