Doctrine
Void-for-Vagueness
Constitutional due process doctrine
The void-for-vagueness doctrine asks whether a law is so unclear that people must guess at its meaning and officials may enforce it arbitrarily.
Study notes
Key points
Focus on fair notice and enforcement standards.
The doctrine is often discussed with due process and free speech.
Bar essays should connect vagueness to the text being challenged.
Doctrine
Essay checklist
Do not discuss vagueness in the abstract. Quote or summarize the challenged standard, then explain why it gives or fails to give fair notice.
- Identify the challenged language.
- Explain the required conduct or prohibited act.
- Discuss whether enforcement discretion is guided.
- Connect the analysis to due process.
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- Supreme Court Decisions and Resolutions Official Supreme Court source for decisions and resolutions.
- Supreme Court e-Library Official public legal research portal of the Judiciary.
- Official Gazette - 1987 Constitution Public copy of the 1987 Philippine Constitution.
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