Article One of the United States Constitution

United States Constitution

The Constitution of the United States is the supreme law of the United States of America. It is the framework for the organization of the United States government and for the relationship of the federal government with the states, citizens, and all people within the United States.The first three...

 describes the powers of Congress

United States Congress

The United States Congress is the bicameral legislature of the federal government of the United States, consisting of the Senate and the House of Representatives. The Congress meets in the United States Capitol in Washington, D.C....

, the legislative branch

Legislature

A legislature is a kind of deliberative assembly with the power to pass, amend, and repeal laws. The law created by a legislature is called legislation or statutory law. In addition to enacting laws, legislatures usually have exclusive authority to raise or lower taxes and adopt the budget and...

 of the federal government

Federal government of the United States

The federal government of the United States is the national government of the constitutional republic of fifty states that is the United States of America. The federal government comprises three distinct branches of government: a legislative, an executive and a judiciary. These branches and...

. The Article establishes the powers of and limitations on the Congress, consisting of a House of Representatives

House of Representatives

House of Representatives is the name of legislative bodies in many countries and sub-national states. In some countries, the House of Representatives is the lower house of a bicameral legislature, with the corresponding upper house often called a "senate". In other countries, the House of...

 composed of Representatives, with each state gaining or losing representation in proportion to its population, and a Senate

United States Senate

The United States Senate is the upper house of the bicameral legislature of the United States, and together with the United States House of Representatives comprises the United States Congress. The composition and powers of the Senate are established in Article One of the U.S. Constitution. Each...

, composed of two Senators from each state. The article details the manner of election and qualifications of members of each House.