In July 1989, the Delaware State Senate Bill 142 significantly toughened the State's drug trafficking law, as it lowered the weight threshold for drug trafficking from 15 to 5 grams and made possession of this amount of illicit drugs "per se" evidence of drug trafficking. Conviction yields a mandatory sentence of at least 3 years incarceration. This study compared the criminal history profiles of those sentenced under these provisions with the other high volume Class B felony, robbery in the first degree, and the next most serious drug offense, possession with the intent to deliver (PWITD). Seventy-eight percent of the offenders incarcerated for drug trafficking under SB142 had no prior incarcerations, 15 percent had been to jail, and just under 8 percent had been imprisoned at least once. In all cases, drug-trafficking offenders under SB142 had a less serious criminal history profile than those convicted of robbery and PWITD. 2 tables and 1 figure