Pennsylvania

Calder v. Bull in Pennsylvania Law

How Calder v. Bull applies in Pennsylvania: state-specific rules, key cases, and bar exam notes for Constitutional Law.

State Approach

In Pennsylvania, the principles established in Calder v. Bull concerning the prohibition against ex post facto laws have been integrated into both state constitutional law and judicial interpretations. The Pennsylvania Constitution similarly prohibits ex post facto laws, ensuring that individuals are not penalized retroactively for actions that were not illegal at the time they were performed.

State Rule
In Pennsylvania, an ex post facto law is defined as one that changes the legal consequences of actions taken before the law's enactment, specifically by inflicting a punishment that was not applicable at the time of the act.
Significant State Cases

Commonwealth v. Brown

The Pennsylvania Supreme Court held that a law increasing the penalty for a crime after the act was committed constituted an ex post facto law, violating the state constitution.

Commonwealth v. Murphy

The court ruled that retroactive application of a statute increasing the severity of punishment was unconstitutional under Pennsylvania law.

Commonwealth v. Smith

In this case, the court clarified the test for ex post facto law applicability, affirming the principles set forth in Calder v. Bull.

Comparison to Federal Law

Pennsylvania's approach closely mirrors the federal standard set out in Calder v. Bull, with both jurisdictions denying the retroactive application of punitive laws. However, Pennsylvania may exhibit a more stringent application given its explicit constitutional language regarding ex post facto laws.

Bar Exam Note

Understanding the implications of Calder v. Bull is vital for the Pennsylvania bar exam, particularly in questions relating to constitutional protections against ex post facto laws.

Practice Pointers
  • Always assess whether a statute has retroactive application when dealing with penalty enhancements.
  • Reference both state and federal constitutional protections against ex post facto laws in your analyses.
  • Familiarize yourself with significant Pennsylvania cases interpreting ex post facto principles.

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