What is the legal doctrine that prevents a person from being tried twice for the same crime?

The legal doctrine that prevents an individual from being tried twice for the same crime is known as Double Jeopardy. This principle is a fundamental protection under the law, ensuring that once a person has been acquitted or convicted of a particular offense, they cannot be subjected to another trial for the same crime in the same jurisdiction. This prevents the government from using its resources to repeatedly prosecute someone in hopes of obtaining a different outcome and protects individuals from the emotional and financial strain that could arise from facing multiple trials for the same offense.

In the context of legal proceedings, Double Jeopardy supports the finality of legal decisions and upholds the integrity of verdicts, whether they are guilty or not guilty. It is important to note that this protection typically applies only within the same jurisdiction and does not prevent prosecution in different jurisdictions for separate but related offenses.

The other options provided refer to different legal concepts. Burden of Proof pertains to the obligation to prove allegations and is primarily the responsibility of the prosecution in criminal cases. Constitutional Immunity refers to protections afforded by constitutional provisions, which may relate to various rights but not specifically to the issue of being tried twice for the same crime. Ex Post Facto refers to laws that apply retroactively and can change the legal