Sources of Law to Know for Intro to Law and Legal Process

Understanding the sources of law is essential for grasping how our legal system operates. These sources, including constitutions, statutes, and case law, shape the rules that govern society and protect individual rights, guiding the legal process we study.

  1. Constitutions

    • Serve as the supreme law of the land, establishing the framework of government and fundamental rights.
    • Outline the structure, powers, and limitations of government branches (executive, legislative, judicial).
    • Protect individual rights and liberties against government infringement.
  2. Statutes

    • Laws enacted by legislative bodies at the federal, state, or local level.
    • Provide specific rules and regulations that govern conduct within society.
    • Can be amended or repealed by the same legislative body that created them.
  3. Regulations

    • Detailed rules created by administrative agencies to implement statutes.
    • Provide guidance on how laws will be enforced and interpreted.
    • Subject to public notice and comment before becoming final, ensuring transparency.
  4. Case law (Common law)

    • Law developed through judicial decisions and court rulings rather than statutes.
    • Establishes legal precedents that guide future cases with similar facts.
    • Reflects the evolving interpretation of laws and societal values.
  5. Treaties

    • Formal agreements between sovereign nations, ratified by legislative bodies.
    • Govern international relations and obligations, often addressing trade, defense, and human rights.
    • Have the same legal standing as federal statutes once ratified.
  6. Executive orders

    • Directives issued by the President or state governors to manage operations of the government.
    • Can have the force of law but are subject to judicial review and legislative oversight.
    • Often used to implement policies or respond to emergencies.
  7. Customary law

    • Unwritten laws based on established practices and traditions within a community or society.
    • Recognized in international law, particularly in the context of human rights and humanitarian law.
    • Reflects the norms and values of a particular culture or society.
  8. Equity

    • A body of law that addresses concerns not adequately covered by common law, focusing on fairness and justice.
    • Provides remedies such as injunctions, specific performance, and equitable estoppel.
    • Historically developed through the Court of Chancery, distinct from common law courts.
  9. Secondary sources (e.g., legal encyclopedias, treatises)

    • Resources that summarize, analyze, and interpret primary legal sources.
    • Include legal textbooks, articles, and encyclopedias that provide context and guidance.
    • Useful for legal research and understanding complex legal principles.
  10. Local ordinances

    • Laws enacted by local government entities, such as cities or counties, to address community-specific issues.
    • Cover a wide range of topics, including zoning, public safety, and local business regulations.
    • Must comply with state and federal laws but can provide more specific regulations tailored to local needs.


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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.