Heavily armed officers in helmets, bulletproof vests and, oddly enough, Bermuda shorts stormed his store, handcuffed him, disabled security cameras and seized his drugs before taking him to jail. When he asked why his shop was invaded, an officer responded, "We're closing them all down." Those words could prove prescient after Los Angeles County District Attorney Steve Cooley said last week he wants to shutter clinics that sell pot for profit. Cooley's plan is the latest salvo in a prolonged conflict in California over whether medical marijuana is truly having its intended effect or is being abused by the larger...