George Mason University School of Law

Skip to main content

Law Library Research Guide:
Federal Primary Materials

The United States of America has a federal system under which the 50 states have agreed to give the federal government certain powers spelled out in the U.S. constitution. All powers not granted to the federal government in the constitution are reserved to the states. Laws are made at three levels federal, state, and local. At each level there are sources of law: legislatures, courts, and executive agencies. The Constitution creates a federal government comprised of three separate and equal branches: legislative, executive, and judicial. The Library of Congress provides a helpful guide to federal legal materials.

Constitution:

Executive Branch:

See Law Library Research Guide: Federal Regulatory Law

The power of the executive branch is vested in the President, who also serves as Commander in Chief of the Armed Forces. The President appoints the Cabinet and oversees the various agencies and departments of the federal government.

In order for a person to become President, he or she must be a natural-born citizen of the United States, be at least 35 years of age, and have resided in the United States for at least 14 years. Once elected, the President serves a term of four years and may be re-elected only once. The President can issue Executive Orders to direct the actions of the federal agencies or to set policies for the executive branch to follow. They are published in the Federal Register, Title 3 Code of Federal Regulations, and the Compilation of Presidential Documents. All are available from HeinOnline and FDSys.

Congress has the authority to write the laws but gives authority to promulgate rules and regulations to interpret and to administer those laws to the federal agencies.

The proposed and final agency regulations are published in the Federal Register (Law Library First Floor Range 102 and Microfiche) is published on every Federal work day. It is available from several different sources.  Easy to use digital formats at HeinOnline Federal Register Library (coverage:  1936 - February 2007) and FDSys (coverage:  1994 – current) are popular choices for Federal Register research. 

The final regulations are codified in the Code of Federal Regulations (Law Library First Floor Range 102 and Microfiche) is also available in electronic format from HeinOnline (coverage:  1938-1986) and from FDSys (with coverage back to 1996).  Lexis and Westlaw also have the CFR (1981-present), although the format is harder to use than the format used for Hein Online and FDSys.

Administrative Agency Decisions:

Judicial Branch:

The judicial branch hears cases that challenge or require interpretation of the legislation passed by Congress and signed by the President. It consists of the Supreme Court and the lower federal courts. Appointees to the federal bench serve for life or until they voluntarily resign or retire.

The Supreme Court is the most visible of all the federal courts. The number of Justices is determined by Congress rather than the Constitution, and since 1869, the Court has been composed of one Chief Justice and eight Associate Justices. Justices are nominated by the President and confirmed by the Senate.

The federal courts often are called the guardians of the Constitution because their rulings protect rights and liberties guaranteed by it. The federal courts interpret and apply the law to resolve disputes. The courts do not make the laws. That is the responsibility of Congress. Nor do the courts have the power to enforce the laws. That is the role of the President and the many executive branch departments and agencies.

U.S. Supreme Court:

U.S. Circuit Courts of Appeal:

U.S. District Courts:

Legislative Branch: