Abbott v. United States, 562 U.S. ___ (2010), is a decision by the Supreme Court of the United States that addressed the mandatory sentencing increase under federal law for the possession or use of a deadly weapon in drug trafficking and violent crimes. In an 8-0 decision, the Court ruled that 18 U.S.C. § 924(c), which required a minimum five-year prison sentence, was to be imposed in addition to any other mandatory sentence given for another crime, including the underlying drug-related or violent offense. The only exception to the five-year addition applied only when another provision required a longer mandatory term for conduct violating §924(c) specifically, rather than a mandatory sentence for another crime as the defendants had unsuccessfully argued.