Gouverneur Morris was an American statesman, a Founding Father of the United States, and a signatory to the Articles of Confederation and the United States Constitution. He wrote the Preamble to the United States Constitution and has been called the "Penman of the Constitution". While most Americans still thought of themselves as citizens of their respective states, Morris advanced the idea of being a citizen of a single union of states. He was also one of the most outspoken opponents of slavery among those who were present at the Constitutional Congress. He represented New York in the United States Senate from 1800 to 1803.

The Constitution of the United States is the supreme law of the United States. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally including seven articles, the Constitution delineates the national frame and constrains the powers of the federal government. The Constitution's first three articles embody the doctrine of the separation of powers, in which the federal government is divided into three branches: the legislative, consisting of the bicameral Congress ; the executive, consisting of the president and subordinate officers ; and the judicial, consisting of the Supreme Court and other federal courts. Article IV, Article V, and Article VI embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. Article VII establishes the procedure subsequently used by the 13 states to ratify it. The Constitution of the United States is the oldest and longest-standing written and codified national constitution in force in the world.