September 17 is Constitution Day in America because on that day in 1787, after 4 months of deliberations, the delegates at the Constitutional Convention in Independence Hall in Philadelphia proposed the Constitution they had drafted to become the Supreme Law of the land. This was the end of one historic deliberation, but it was the beginning of another. The Constitution would be "of no more consequence than the paper on which it is written," until it was ratified by the people of the United States.