http://www.pbs.org/wgbh/pages/frontline/shows/snitch/primer/ http://www.pbs.org/wgbh/pages/frontline/shows/snitch/primer/ PBS article Anti-Drug Abuse Act of 1986 http://www.pbs.org/wgbh/pages/frontline/shows/snitch/primer/ physical evidence is not necessary Anti-Drug Abuse Act of 1986 explained http://www.pbs.org/wgbh/pages/frontline/shows/snitch/primer/ got longer. PBS Frontline's Snitch "Drug Laws and Snitching: A Primer" wrote passed so-called "mandatory minimums" dramatic increase in the number of drug convictions http://www.pbs.org/wgbh/pages/frontline/shows/snitch/primer/ same prison terms Per PBS Drug Laws and Snitching: A Primer