Historically, the study of American law needed to start with decisional law—judge-made law. Courts are the first resort for solving problems of civil cohabitation among people. Henry M. Hart and Albert M Sacks would explain this situation stating that “Courts are regularly open for the settlement of disputes, as legislatures are not” (1994, 163). Today, while courts continue to exercise that role, decisional (case) law has lost that chief impact. That is perhaps because the other branches of the government are more actively involved in governing our daily activities. Another reason for loosing its primary role is that, in Allan Farnsworth’s words, “decisional law [today] stands below legislation in the hierarchy of authorities and case law is subject to change by statute” (1996, 37). Or perhaps the most accurate explanation is that “legislation has so increased in quantity and importance in the United States during the past century” (Id., 61) that it only makes sense that this incursion in the study of tangible legal norms also starts with legislation.

Legislation, which comprises both federal and state statutes, is also known as statutory law. Through statutes legislative bodies attempt to ensure social stability and make our future predictable. Legislation represents a major component of legal normativism. Unlike case law, which is driven by particular controversies, legislation is the result of perceived public needs that require a solution for the future. The source of statutory law is statutes and ordinances.

Statutes are the result of a legislative process that takes place at the federal, state, and even municipal level. The legislative process includes drafting bills and their passage through the legislative body and ends with the bill becoming a public or private law, a statute.

Once a statute governs a specific social activity, every time a dispute arises within that area of activity, courts will interpret the statute and solve the dispute according to the applicable statutory provision. In that process, the parties’ attorneys will offer their own interpretation of the statute to the court, hoping that theirs will prevail. Interpreting statues, as further shown below, is a complex process, because often words do not translate into a single meaning. In order to better understand how statutory law works, we will first briefly describe how statues are enacted and then identify the primary sources of statutory law: (a) the Constitution; (b-c) statutes enacted by Congress and the legislatures of the states; and (d) the ordinances issued by municipal bodies. Then we will talk about locating the appropriate repositories and a few basic techniques for finding specific statutory provisions. Finally we will talk about completing your research process and making sure that what you found is still good law.
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Introduction to Statutory Law

The Legislative Process and Its Constitutional Boundaries

The Legislative Process. Brief Review

Identifying the Sources of Statutory Law

The Constitution of the United States


Federal Statutes


State Constitutions and Statutes


Municipal Ordinances


Applying Legislation: Interpreting Statutes

The “Plain Meaning Rule”


Interpreting Statutes in Light of Their Legislative History


The Purposive Analysis: The “Social Purpose” Rule


How to Locate Statutory Law

Completing Your Statutory Research