1789    James Madison introduces twelve proposed amendments to the United States Constitution in the House of Representatives; by 1791, ten of them are ratified by the state legislatures and become the Bill of Rights; another is eventually ratified in 1992 to become the 27th Amendment.

1789    The U.S. Congress passes twelve amendments to the United States Constitution: the Congressional Apportionment Amendment (which was never ratified), the Congressional Compensation Amendment, and the ten that are known as the Bill of Rights.

1992    Ratification by Alabama brings into effect the 27th Amendment to the U.S. Constitution

1992    The Archivist of the United States officially announces the Twenty-seventh Amendment to the United States Constitution.