This is the story of one of the world's great experiments in government by the people. For more than two centuries, a new Congress has convened every two years following elections that determine all the seats in the House and one-third of those in the Senate. While the individuals change, the institution has endured-through civil and world wars, waves of immigration and great migrations, and continuous social and technological change.
The Congress we know today was created after the failure of a government under the Articles of Confederation, which left most powers to the states. In 1787, a convention of specially selected delegates proposed a new constitution that strengthened the national government and established a representative branch composed of a House and Senate.
From the beginning, the two bodies of Congress were meant to be different, yet interdependent. James Madison said they would be "as little connected with each other, as the nature of their common functions, and their common dependence on society, will admit." As a result, the House and Senate have different rules, traditions, and cultures. Yet in their shared responsibilities they function as the nation's single lawmaking body.