Federal and local authorities all over the country say it's the biggest drug epidemic today. Not methamphetamines or cocaine, but heroin.You might think of heroin as primarily an inner-city problem. But dealers, connected to Mexican drug cartels, are making huge profits by expanding to new, lucrative markets: suburbs all across the country. It's basic economics. The dealers are going where the money is and they're cultivating a new set of consumers: high school students, college athletes, teachers and professionals.Heroin is showing up everywhere -- in places like Columbus, Ohio . The area has long been viewed as so typically Middle American that, for years, many companies have gone there to test new products. We went to the Columbus suburbs to see how heroin is taking hold in the heartland.