The liberal program of the American Revolution was consolidated by the federal Constitution, the Bill of Rights, and the creation of a national republic. Assembling in Philadelphia in the summer of 1787, the delegates to the Constitutional Convention were determined to end the period of economic depression, social uncertainty, and leadership under a weak central government that had followed independence. The delegates thus decided to grant the federal, or central, government important powers: regulation of domestic and foreign trade, the right to tax, and the means to enforce its laws.

When the results of the Constitutional Convention were presented to the states for ratification, a great public debate began. The opponents of the proposed Constitution — the Antifederalists — charged that the framers of the new document had taken too much power from the individual states and made the federal government too strong. Moreover, many Antifederalists feared for the individual freedoms for which they had fought. To overcome these objections, the Federalists promised to spell out these basic freedoms as soon as the new Constitution was adopted. The result was the first ten amendments to the Constitution, which the first Congress passed shortly after it met in New York in March 1789. These amendments, ratified in 1791, formed an effective Bill of Rights to safeguard the individual.