Cartels have held a monopoly on the drug trade for decades, but there’s a new supplier in town. Medical professionals with a prescription pad are increasingly the suppliers of widely abused pills to drug dealers catering to the rich and famous. The recent conviction of “Ketamine Queen” Jasveen Sangha uncovered a small part of an emerging trend in drug trafficking. Earlier this month, a federal court sentenced Sangha, 41, to 15 years in prison for selling ketamine to several individuals who subsequently died by overdose, including well-known actor Matthew Perry, best known for his role as the wise-cracking Chandler Bing in ...