The most exhaustive collection of data ever on U.S. marijuana arrests, penalties and related information finds no relationship between marijuana arrest and use rates, while penalty structures act as a price support mechanism that boosts the illegal market.

Two analysts from The Sentencing Project analyzed data on drug arrest from 1990 to 2002. During this period, U.S. marijuana arrests skyrocketed, making minor marijuana offenses the main focus in the "war on drugs."

This report presents evidence that the United States' unmatched propensity for incarceration of its citizens for drug offenses suffers from significant racial disparity against African-Americans.

This report looks at the whole spectrum of drug treatment admissions, not just young people.