The broad topic of constitutional law deals with the interpretation and implementation of the United States Constitution. As the Constitution is the foundation of the United States, constitutional law deals with some of the fundamental relationships within our society. This includes relationships among the states, the states and the federal government, the three branches (The Executive, Legislature, Judiciary) of the federal government, and the rights of the individual in relation to both federal and state government. The Supreme Court has played a crucial role in interpreting the Constitution. Consequently, study of Constitutional Law focuses heavily on Supreme Court rulings.

While the topic also covers the interpretation and implementation of state constitutions, without qualification it is usually understood as referring to the Federal Constitution.

The Constitution establishes the three branches of the federal government and enumerates and establishes their powers. 

Article I establishes the House of Representatives and the Senate. See U.S. Const. art. I. Section 8 enumerates the powers of Congress. See U.S. Const. art. I., § 8. Congress has specifically used its power to regulate commerce (the commerce clause) with foreign nations and among the states to enact broad and powerful legislation throughout the nation. The sixteenth Amendment gives Congress the power to collect a national income tax without apportioning it among the states. See U.S. Const. amend. XVI. Section 9 of Article I prohibits Congress from taking certain actions. See U.S. Const. art. I, § 9. For example, until the passage of the 16th Amendment Congress could not directly tax the people of the United States unless it was proportioned to the population of each state. See U.S. Const. art. I, § 9. Section 10 of Article I lists a number of specific actions that individual states may no longer take. U.S. Const. art. I, § 10.

Article II of the Constitution establishes the presidency and the executive branch of government. The powers of the President are not as clearly enumerated as those of the Congress. He is vested with the "executive" power by section 1. See U.S. Const. art. II, § 1. Section 2 establishes him as the "commander and chief" and grants him power to give pardons, except in cases of impeachment, for offenses against the United States. See U.S. Const. art. II, § 2. Section 3 provides the power to make treaties (with the advice and consent of two-thirds of the Senate) and the power to nominate ambassadors, ministers, Judges of the Supreme Court, and all other Officers of the United States. See U.S. Const. art. 2, § 3.

The role of the Supreme Court and the rest of the judicial branch of the federal government is covered by Article III. See U.S. Const. art. III, § 2.

Article V of the Constitution provides the procedures to be followed to amend the Constitution. See U.S. Const. article V. Currently, the Constitution has been amended twenty-seven times (including the Bill of Rights).

Article VI of The United States Constitution states that the "Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all treaties made or shall be made, under the Authority of the United States, shall be the Supreme Law of the Land." See The Supremacy Clause: U.S. Constitution, art. VI, § 2. Furthermore, all federal, state, and local officials must take an oath to support the Constitution. This means that state governments and officials cannot take actions or pass laws that interfere with the Constitution, laws passed by Congress, or treaties. The Constitution was interpreted, in 1819, as giving the Supreme Court the power to invalidate any state actions that interfere with the Constitution and the laws and treaties passed pursuant to it. That power is not itself explicitly set out in the Constitution but was declared to exist by the Supreme Court in the decision of McCulloch v. Maryland.

The first section of the fourth article of the Constitution contains the "full faith and credit clause." See U.S. Const. art. IV, § 1. This clause provides that each state must recognize the public acts (laws), records, and judicial proceeding of the other states. The Fourth Article also guarantees that a citizen of a state be entitled to the "privileges and immunities" in every other state. See U.S. Const. art. IV, § 2.

The power of the federal government is not absolute. The tenth Amendment specifically states that "the powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people. See U.S. Const. amend. X.

U.S. Constitution

• Table of Contents

Federal Judicial Decisions

• U.S. Supreme Court:
  • Historic Constitutional Law Decisions
  • Recent Constitutional Law Decisions
• U.S. Circuit Courts of Appeals: Recent Constitutional Law Decisions

Background:

• Articles of Confederation
• The Federalist Papers
• Letter of Transmittal, Federal Constitution, Sept. 1787

State Constitutions

• Listed State by State

State Judicial Decisions

• N.Y. Court of Appeals:
• Recent Decisions on Constitutional Law
• Commentary from liibulletin-ny
• Appellate Decisions from Other States

Collections of Other Constitutions

• Constitutions of the World from WashLab Web
• World Constitutions
• International Constitutional Law