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More Imprisonment Does Not Reduce State Drug Problems (2018)

Nearly 300,000 people are held in state and federal prisons in the United States for drug-law violations, up from less than 25,000 in 1980. These offenders served more time than in the past: Those who left state prisons in 2009 had been behind bars an average of 2.2 years, a 36 percent increase over 1990, while prison terms for federal drug offenders jumped 153 percent between 1988 and 2012, from about two to roughly five years.

As the U.S. confronts a growing epidemic of opioid misuse, policymakers and public health officials need a clear understanding of whether, how, and to what degree imprisonment for drug offenses affects the nature and extent of the nation’s drug problems. To explore this question, The Pew Charitable Trusts examined publicly available 2014 data from federal and state law enforcement, corrections, and health agencies. The analysis found no statistically significant relationship between state drug imprisonment rates and three indicators of state drug problems: self-reported drug use, drug overdose deaths, and drug arrests.

The findings—which Pew sent to the President’s Commission on Combating Drug Addiction and the Opioid Crisis in a letter dated June 19, 2017—reinforce a large body of prior research that cast doubt on the theory that stiffer prison terms deter drug misuse, distribution, and other drug-law violations. The evidence strongly suggests that policymakers should pursue alternative strategies that research shows work better and cost less.

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