On this day: James Madison introduces the Bill of Rights
On June 8, 1789, James Madison addressed the House of Representatives and introduced a proposed Bill of Rights to the Constitution. More than three months later, Congress would finally agree on a final list of Rights to present to the states.
Some of Madison’s opening list of amendments didn’t make the final cut in September. The House agreed on a version of the Bill of Rights that had 17 amendments, and later, the Senate consolidated the list to 12 amendments. In the end, the states approved 10 of the 12 amendments in December 1791. One of two amendments rejected by the states was eventually ratified in 1992 as the 27th Amendment; it restricted the ability of Congress to change the pay of a sitting Congress while in session. (The other proposed amendment not ratified dealt with the number of representatives in Congress, based on the 1789 population.)
https://constitutioncenter.org/blog/on-this-day-james-madison-introduces-the-bill-of-rights