The United States Constitution sets forth the structure of the U.S. system of government, allocating power and responsibility among the three branches of government, and describes its fundamental principles.
The Constitution is divided into seven articles:
In addition, there have been 27 amendments to the Constitution, most notably the first ten which constitute the "Bill of Rights." The Bill of Rights address certain fundamental rights of individuals.
Generally current state constitutions are published at the front of the state's current statutory code. The state constitutions are often modeled after the federal Constitution, and address the structure and responsibilities of the branches of the state government.