Testimony issued by the Government Accountability Office with an abstract that begins "GAO summarized the results of its investigation, performed at Congress' request, of street narcotic sales in the vicinity of certain drug rehabilitation clinics in the District of Colombia. To obtain an overview of the problem, we conducted physical surveillance of five clinics in the District of Columbia and interviewed clinic personnel and law enforcement officials. In brief, we found that a significant amount of illegal drug trafficking activity takes place around these clinics. Patients frequently must navigate their way through a virtual bazaar of illegal drug dealing when they enter and exit the facilities."