A New Jersey doctor running an illegal prescription opioid drug ring with a motorcycle gang had a member hire someone to kill his wife after she threatened to expose the scheme while trying to force him to agree to a divorce, authorities said Tuesday. James Kauffman and a member of the Pagan Outlaw Motorcycle Gang were charged in the May 2012 shooting death of April Kauffman. Another six people connected to the gang were charged with racketeering in the drug ring that prosecutors said continued until last June, when Kauffman was arrested at his office while brandishing a gun.