Issue: 1. Whether the term "felony drug offense" as used in federal statutes requiring imposition of enhanced mandatory minimum 20 years' imprisonment when drug offender has a prior conviction for a felony drug offense must be read in pari materia with federal statutes defining both felony and felony drug offense so as to require imposition of minimum 20-year sentence only if prior drug conviction as both punishable by more than one year in prison and characterized as a felony by controlling law; 2. When the court finds that a criminal statute is ambiguous, must it then turn to the rule of lenity to resolve ambiguity?
Judgment: Affirmed, in an opinion by Justice Ruth Bader Ginsburg on April 16, 2008.
Merits briefs (via ABA)