Article 4 of the U.S. Constitution describes relations between states, with Congress having the power to host new states. The tenth amendment to the Constitution makes local government a matter of state and not of federal law, with special cases for the territories and the District of Columbia. States have adopted a large number of local government systems. Every five years, the U.S. Census Bureau conducts a population census to produce statistics on state organization, public employment and public finances. The categories of local government defined in this census provide a practical basis for understanding local authorities: district governments, municipalities or municipalities, municipalities and municipalities. The new states had to decide what form of government to put in place, how to choose who would shape the constitutions and how the resulting document would be ratified. There are notable differences between documents written by rich and less prosperous countries.
In states where the rich have strong control over the process (such as Maryland, Virginia, Delaware, New York and Massachusetts), the resulting constitutions were contained: a pact for which much information is available online is the Multistate Tax Compact, which came into effect in 1967. Its members include 15 states and the District of Columbia.  The pact, which is available on the website of the Multinational Tax Commission, established that the Commission to pursue the following objectives: the patriots who took control of formerly loyalist territories have drawn up constitutions to determine governance in these new states. While intergovernmental pacts are binding treaties between the states that are part of them, pacts approved by Congress also become federal law. The Supreme Court ruled that a border between states, agreed in an intergovernmental pact approved by Congress, “is binding and ultimately settles the border between them  and with the same effect as a treaty between sovereign powers.”  In Cuyler v. Adams, the Court of Justice, when Congress approved an intergovernmental pact and that “the purpose of this agreement is an appropriate subject for congressional legislation, congressional approval turns the state agreement into federal law, in accordance with the compact clause.”  The U.S. Court of Appeals for the Fourth Circuit has clarified that pacts approved by Congress, which do not threaten the supremacy of the federal state but address matters suitable for congressional legislation, still become a federal right, although such approval has not been required.  According to the Constitution, the U.S. Supreme Court is originally responsible for resolving interstate disputes and the Court will apply intergovernmental covenants in accordance with the principles of contract law.  The United States has had the widest franchise of any nation in the world.