"Slightly more than half of heroin offenders convicted of an offense carrying a mandatory minimum penalty were Hispanic (61.3%, n=672) and about one-quarter (23.4%, n=256) were Black. These percentages shift slightly when examining heroin offenders subject to the mandatory minimum penalty at sentencing. Approximately half of heroin offenders subject to the mandatory minimum penalty at sentencing were Hispanic (51.7%, n=247) and about one-third (35.8%, n=171) were Black. The shift is primarily attributable to criminal history differences between the two. The proportion of offenders in each criminal history category who were Black increased with the criminal history category. Conversely, the proportion of offenders in each criminal history category who were Hispanic decreased with the increased criminal history category.688"

Source

"Report to Congress: Mandatory Minimum Penalties in the Federal Criminal Justice System" (Washington, DC: US Sentencing Commission, October 2011), p. 240.
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