Types of Law in America

The American legal landscape includes several distinct categories of law, each serving different purposes and originating from different sources.

Constitutional Law

Constitutional law is the supreme law of the land. It establishes the structure of government and protects individual rights. Any statute or regulation that conflicts with the Constitution can be struck down through judicial review.

Statutory Law

Statutes are laws enacted by legislative bodies — Congress at the federal level and state legislatures at the state level. Federal statutes are compiled in the United States Code; state statutes are organized in each state's code or compiled laws.

Administrative and Regulatory Law

Federal agencies like the EPA, SEC, and FDA create regulations that have the force of law. These rules are published in the Code of Federal Regulations (CFR) and govern everything from food safety to securities trading.

Common Law

Common law (also called case law or judge-made law) develops through court decisions rather than statutes. Under the principle of stare decisis, courts follow precedent set by higher courts. Common law is particularly important in areas like torts, contracts, and property.

Criminal vs. Civil Law

Criminal law involves offenses against the state (society). The government prosecutes the defendant, and penalties include imprisonment, fines, or probation.

Civil law involves disputes between private parties. The plaintiff sues the defendant for monetary damages or equitable relief (like an injunction).

Other Categories

Equity — courts may issue orders (injunctions, specific performance) when monetary damages are insufficient

International law — treaties and agreements between nations

Municipal law — ordinances passed by cities, counties, and local governments

Understanding these categories helps you identify which rules apply to any legal situation.

Types of Law in America