A bill to amend title 18, United States Code, so as to impose mandatory minimum terms with respect to certain offenses, and for other purposes.

Establishes mandatory minimum two-year terms of imprisonment for the Federal crimes of burglary, aggravated assault, second degree murder, commission of an offense with a firearm or destructive device, rape, robbery (including bank robbery), and the commission of an offense involving heroin. Increases the minimum term to four years for repeat offenders.

Stipulates that the executive or imposition of sentence: (1) may not be suspended; (2) may not include probation or parole; and (3) is not subject to good time provisions or the Federal Youth Corrections Act.

Specifies mitigating circumstances for the imposition of such mandatory sentences. Requires a sentencing hearing to determine if such circumstances are applicable.