After fierce debate over how to balance federal power with individual liberty, Congress adopted twelve proposed amendments and forwarded them to the states. Ten were ratified by December 1791, becoming the Bill of Rights — guaranteeing freedoms of speech, religion, and the press, the right to bear arms, and protections against unreasonable search and self-incrimination. James Madison, once skeptical such a list was necessary, became its chief architect.
When the Constitutional Convention finished its work in 1787, it included no bill of rights at all — a glaring omission that nearly sank ratification in several states. Anti-Federalists like Patrick Henry and George Mason warned that a strong central government without explicit limits would inevitably become tyrannical. Federalists, including Alexander Hamilton, argued a bill of rights was unnecessary and even dangerous, since listing specific rights might imply the government could infringe on any right not listed.
James Madison, who had opposed the idea, changed his mind partly out of political necessity — he'd promised voters in a tight congressional race that he'd pursue amendments — and partly out of genuine conviction that structural protections weren't enough. Working from over two hundred amendments proposed by state ratifying conventions, he distilled a list down to seventeen, which the House trimmed further.
Two of the original twelve amendments failed at the time. One, concerning congressional apportionment, was never ratified. The other, limiting when congressional pay raises could take effect, languished for two centuries until Michigan's ratification in 1992 finally made it the 27th Amendment — the slowest amendment ever added to the Constitution.
Key people: James Madison