On June 8, 1789, James Madison introduced his proposed amendments to the Constitution, which would eventually become known as the Bill of Rights. On September 25, 1789, the First Federal Congress of the United States proposed to the state legislatures twelve amendments to the Constitution.
The first two, concerning the number of constituents for each Representative and the compensation of Congressmen, were not ratified. The original second amendment proposed by the First Federal Congress dealt with the compensation of members of Congress. Although rejected at the time, it was eventually ratified on May 7, 1992, as the 27th amendment.
Articles three through twelve, known as the Bill of Rights, became the first ten amendments to the U.S. Constitution and contained guarantees of essential rights and liberties omitted in the crafting of the original document.