Criminal Law · Double Jeopardy

How Does Double Jeopardy in Criminal Law?

Clear answer to: How Does Double Jeopardy in Criminal Law? with key cases, examples, and exam tips for law students.

Short Answer

Double jeopardy is a constitutional protection that prohibits an individual from being tried twice for the same offense after acquittal or conviction. This principle is embedded in the Fifth Amendment of the U.S. Constitution.

Detailed Answer

Double jeopardy, a fundamental principle in U.S. criminal law, protects individuals from being prosecuted more than once for the same crime. Under the Fifth Amendment, once a person has been acquitted or convicted, they cannot face further prosecution for the same offense in the same jurisdiction. This protection is critical for ensuring finality in legal judgments and preventing state abuse of prosecutorial power.

The concept of double jeopardy encompasses several key aspects: being tried for the same offense after acquittal or conviction, and it also applies to situations where charges are severed. Notably, the principle does not prohibit successive prosecutions for different offenses arising from the same act, provided that each charge requires proof of an element that the others do not, as established in the Blockburger test (Blockburger v. United States, 1932).

Importantly, double jeopardy also includes the concept of

Key Cases
  • 1Blockburger v. United States (1932) - established the test for determining whether two offenses are distinct for double jeopardy purposes.
  • 2Benton v. Maryland (1969) - incorporated the double jeopardy protection against state prosecutions via the Fourteenth Amendment.
  • 3Green v. United States (1957) - clarified that a conviction and an acquittal in separate trials are both protections against double jeopardy.
  • 4Ashe v. Swenson (1970) - reinforced that an acquittal in a prior trial bars further prosecution for the same offense.
  • 5Ohio v. Johnson (1984) - addressed the protections of double jeopardy in the context of lesser-included offenses.
Practical Example

For instance, if a defendant is tried for theft and acquitted, the state cannot bring the same theft charge against the defendant at a later date even if new evidence emerges. However, if the theft charge is dropped and the defendant is subsequently charged with robbery for the same incident, that may proceed since robbery involves different legal elements.

Exam Relevance

Double jeopardy commonly appears in law school exams, often in hypothetical fact patterns requiring students to apply the double jeopardy doctrine and related case law. Scenarios may include analyzing multiple charges stemming from a single incident.

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